diff --git a/CMakeLists.txt b/CMakeLists.txt
index 70623f0b5..3010e802d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.24.0)
 project(libchewing LANGUAGES C)
 
-set(CMAKE_PROJECT_VERSION 0.8.0-rc.3)
+set(CMAKE_PROJECT_VERSION 0.8.0-rc.4)
 set(LIBCHEWING_VERSION ${CMAKE_PROJECT_VERSION})
 set(PACKAGE_VERSION ${CMAKE_PROJECT_VERSION})
 set(LIBCHEWING_BINARY_VERSION 1.0.0)
diff --git a/Cargo.lock b/Cargo.lock
index 5bbd6fad2..0d2e88980 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -94,7 +94,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chewing"
-version = "0.8.0-beta.3"
+version = "0.8.0-beta.4"
 dependencies = [
  "der",
  "directories",
@@ -105,7 +105,7 @@ dependencies = [
 
 [[package]]
 name = "chewing-cli"
-version = "0.8.0-beta.3"
+version = "0.8.0-beta.4"
 dependencies = [
  "anyhow",
  "chewing",
@@ -115,7 +115,7 @@ dependencies = [
 
 [[package]]
 name = "chewing_capi"
-version = "0.8.0-beta.3"
+version = "0.8.0-beta.4"
 dependencies = [
  "chewing",
  "env_logger",
diff --git a/Cargo.toml b/Cargo.toml
index 6a89c67a5..6db66f84b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "chewing"
 description = "The Chewing (酷音) intelligent Zhuyin input method."
 documentation = "https://docs.rs/chewing"
 license = "LGPL-2.1-or-later"
-version = "0.8.0-beta.3"
+version = "0.8.0-beta.4"
 rust-version = "1.70"
 edition = "2021"
 
diff --git a/NEWS b/NEWS
index 22060ca8f..be38423a4 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,4 @@
-What's New in libchewing 0.8.0-rc.2 (UNRELEASED)
+What's New in libchewing 0.8.0-rc.4 (UNRELEASED)
 ---------------------------------------------------------
 
 * Added
@@ -9,12 +9,16 @@ What's New in libchewing 0.8.0-rc.2 (UNRELEASED)
 * Changed
   - CMake default preset switched to build with rust.
   - CMake minimum required version bumped to 3.24.0.
+  - System dictionary and user dictionary file now uses platform standard paths.
+    See https://docs.rs/chewing/latest/chewing/path/fn.data_dir.html for
+    details.
   - Improved TrieBufDictionary::from ergonomics.
   - Rename DictEntries to Entries.
   - Ensure all fallible API returns Error.
   - Improved algorithm so using Tab key to find alternative phrasing is more
     responsive.
   - Easy symbol input now accepts arbitrary long "symbols". (rust)
+  - Removed duplicated symbols "●" and "○" from symbols input.
 
 * Buf fixed
   - chewing_cand_CheckDone result was reversed in capi (introduced in v0.7.0)
diff --git a/capi/Cargo.toml b/capi/Cargo.toml
index 7aeb9a573..3ed09088d 100644
--- a/capi/Cargo.toml
+++ b/capi/Cargo.toml
@@ -2,7 +2,7 @@
 name = "chewing_capi"
 description = "The Chewing (酷音) intelligent Zhuyin input method."
 license = "LGPL-2.1-or-later"
-version = "0.8.0-beta.3"
+version = "0.8.0-beta.4"
 rust-version = "1.70"
 edition = "2021"
 
@@ -10,7 +10,7 @@ edition = "2021"
 crate-type = ["rlib", "staticlib"]
 
 [dependencies]
-chewing = { version = "0.8.0-beta.3", path = ".." }
+chewing = { version = "0.8.0-beta.4", path = ".." }
 env_logger = { version = ">= 0.10.2", default-features = false }
 log = { workspace = true }
 
diff --git a/data/symbols.dat b/data/symbols.dat
index 55025024e..b16f86391 100644
--- a/data/symbols.dat
+++ b/data/symbols.dat
@@ -5,7 +5,7 @@
 上下括號=︵︶﹁﹂︹︺︷︸︿﹀﹃﹄︽︾︻︼
 希臘字母=αβγδεζηθικλμνξοπρστυφχψωΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ
 數學符號=＋－×÷＝≠≒∞±√＜＞﹤﹥≦≧∩∪ˇ⊥∠∟⊿㏒㏑∫∮∵∴╳﹢
-特殊圖形=↑↓←→↖↗↙↘㊣◎○●⊕⊙○●△▲☆★◇◆□■▽▼§￥〒￠￡※♀♂
+特殊圖形=↑↓←→↖↗↙↘㊣◎○●⊕⊙△▲☆★◇◆□■▽▼§￥〒￠￡※♀♂
 Unicode=♨☀☁☂☃♠♥♣♦♩♪♫♬☺☻
 單線框=├─┼┴┬┤┌┐╞═╪╡│▕└┘╭╮╰╯
 雙線框=╔╦╗╠═╬╣╓╥╖╒╤╕║╚╩╝╟╫╢╙╨╜╞╪╡╘╧╛
diff --git a/doc/chewing-cli.1 b/doc/chewing-cli.1
index 20deffc6e..26c22d8b5 100644
--- a/doc/chewing-cli.1
+++ b/doc/chewing-cli.1
@@ -1,6 +1,6 @@
 .ie \n(.g .ds Aq \(aq
 .el .ds Aq '
-.TH chewing-cli 1  "chewing-cli 0.8.0-beta.3" 
+.TH chewing-cli 1  "chewing-cli 0.8.0-beta.4" 
 .SH NAME
 chewing\-cli \- Tools of the Chewing (酷音) intelligent Zhuyin input method.
 .SH SYNOPSIS
@@ -25,4 +25,4 @@ Display information about the dictionary
 chewing\-cli\-dump(1)
 Dump the dictionary entries into tsi.src formatted stream
 .SH VERSION
-v0.8.0\-beta.3
+v0.8.0\-beta.4
diff --git a/fuzzer/Cargo.toml b/fuzzer/Cargo.toml
index d710380f3..c3c0e3b85 100644
--- a/fuzzer/Cargo.toml
+++ b/fuzzer/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-chewing = { version = "0.8.0-beta.3", path = ".." }
-chewing_capi = { version = "0.8.0-beta.3", path = "../capi" }
+chewing = { version = "0.8.0-beta.4", path = ".." }
+chewing_capi = { version = "0.8.0-beta.4", path = "../capi" }
 log = "0.4.21"
 env_logger = { version = ">= 0.10.2", default-features = false }
diff --git a/tests/test-symbol.c b/tests/test-symbol.c
index d9dc2058e..bcd924fdd 100644
--- a/tests/test-symbol.c
+++ b/tests/test-symbol.c
@@ -183,26 +183,24 @@ static const TestData SYMBOL[] = {
     {"`8<R>2<E>", "\xE2\x97\x8F" /* ● */ },
     {"`8<R>3<E>", "\xE2\x8A\x95" /* ⊕ */ },
     {"`8<R>4<E>", "\xE2\x8A\x99" /* ⊙ */ },
-    {"`8<R>5<E>", "\xE2\x97\x8B" /* ○ */ },
-    {"`8<R>6<E>", "\xE2\x97\x8F" /* ● */ },
-    {"`8<R>7<E>", "\xE2\x96\xB3" /* △ */ },
-    {"`8<R>8<E>", "\xE2\x96\xB2" /* ▲ */ },
-    {"`8<R>9<E>", "\xE2\x98\x86" /* ☆ */ },
-    {"`8<R>0<E>", "\xE2\x98\x85" /* ★ */ },
-    {"`8<R><R>1<E>", "\xE2\x97\x87" /* ◇ */ },
-    {"`8<R><R>2<E>", "\xE2\x97\x86" /* ◆ */ },
-    {"`8<R><R>3<E>", "\xE2\x96\xA1" /* □ */ },
-    {"`8<R><R>4<E>", "\xE2\x96\xA0" /* ■ */ },
-    {"`8<R><R>5<E>", "\xE2\x96\xBD" /* ▽ */ },
-    {"`8<R><R>6<E>", "\xE2\x96\xBC" /* ▼ */ },
-    {"`8<R><R>7<E>", "\xC2\xA7" /* § */ },
-    {"`8<R><R>8<E>", "\xEF\xBF\xA5" /* ￥ */ },
-    {"`8<R><R>9<E>", "\xE3\x80\x92" /* 〒 */ },
-    {"`8<R><R>0<E>", "\xEF\xBF\xA0" /* ￠ */ },
-    {"`8<R><R><R>1<E>", "\xEF\xBF\xA1" /* ￡ */ },
-    {"`8<R><R><R>2<E>", "\xE2\x80\xBB" /* ※ */ },
-    {"`8<R><R><R>3<E>", "\xE2\x99\x80" /* ♀ */ },
-    {"`8<R><R><R>4<E>", "\xE2\x99\x82" /* ♂ */ },
+    {"`8<R>5<E>", "\xE2\x96\xB3" /* △ */ },
+    {"`8<R>6<E>", "\xE2\x96\xB2" /* ▲ */ },
+    {"`8<R>7<E>", "\xE2\x98\x86" /* ☆ */ },
+    {"`8<R>8<E>", "\xE2\x98\x85" /* ★ */ },
+    {"`8<R>9<E>", "\xE2\x97\x87" /* ◇ */ },
+    {"`8<R>0<E>", "\xE2\x97\x86" /* ◆ */ },
+    {"`8<R><R>1<E>", "\xE2\x96\xA1" /* □ */ },
+    {"`8<R><R>2<E>", "\xE2\x96\xA0" /* ■ */ },
+    {"`8<R><R>3<E>", "\xE2\x96\xBD" /* ▽ */ },
+    {"`8<R><R>4<E>", "\xE2\x96\xBC" /* ▼ */ },
+    {"`8<R><R>5<E>", "\xC2\xA7" /* § */ },
+    {"`8<R><R>6<E>", "\xEF\xBF\xA5" /* ￥ */ },
+    {"`8<R><R>7<E>", "\xE3\x80\x92" /* 〒 */ },
+    {"`8<R><R>8<E>", "\xEF\xBF\xA0" /* ￠ */ },
+    {"`8<R><R>9<E>", "\xEF\xBF\xA1" /* ￡ */ },
+    {"`8<R><R>0<E>", "\xE2\x80\xBB" /* ※ */ },
+    {"`8<R><R><R>1<E>", "\xE2\x99\x80" /* ♀ */ },
+    {"`8<R><R><R>2<E>", "\xE2\x99\x82" /* ♂ */ },
     {"`91<E>", "\xE2\x99\xA8" /* ♨ */ },
     {"`92<E>", "\xE2\x98\x80" /* ☀ */ },
     {"`93<E>", "\xE2\x98\x81" /* ☁ */ },
diff --git a/tests/testhelper/Cargo.toml b/tests/testhelper/Cargo.toml
index 4e1ae8228..8558a5166 100644
--- a/tests/testhelper/Cargo.toml
+++ b/tests/testhelper/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-chewing = { version = "0.8.0-beta.3", path = "../.." }
+chewing = { version = "0.8.0-beta.4", path = "../.." }
 
 [features]
 sqlite = ["chewing/sqlite"]
diff --git a/tools/Cargo.toml b/tools/Cargo.toml
index 96ffcbccb..da0223403 100644
--- a/tools/Cargo.toml
+++ b/tools/Cargo.toml
@@ -2,12 +2,12 @@
 name = "chewing-cli"
 description = "Tools of the Chewing (酷音) intelligent Zhuyin input method."
 license = "LGPL-2.1-or-later"
-version = "0.8.0-beta.3"
+version = "0.8.0-beta.4"
 edition = "2021"
 
 [dependencies]
 anyhow = "1.0.0"
-chewing = { version = "0.8.0-beta.3", path = "..", features = ["sqlite"] }
+chewing = { version = "0.8.0-beta.4", path = "..", features = ["sqlite"] }
 clap = { version = ">= 4.4.18", features = ["derive"] }
 clap_mangen = { version = "0.2.20", optional = true }
 
diff --git a/vet/imports.lock b/vet/imports.lock
index f0a952a54..36f2b8406 100644
--- a/vet/imports.lock
+++ b/vet/imports.lock
@@ -2,12 +2,12 @@
 # cargo-vet imports lock
 
 [[unpublished.chewing]]
-version = "0.8.0-beta.3"
-audited_as = "0.8.0-beta.2"
+version = "0.8.0-beta.4"
+audited_as = "0.8.0-beta.3"
 
 [[unpublished.chewing-cli]]
-version = "0.8.0-beta.3"
-audited_as = "0.8.0-beta.2"
+version = "0.8.0-beta.4"
+audited_as = "0.8.0-beta.3"
 
 [[publisher.anstream]]
 version = "0.6.13"
@@ -59,15 +59,15 @@ user-login = "Amanieu"
 user-name = "Amanieu d'Antras"
 
 [[publisher.chewing]]
-version = "0.8.0-beta.2"
-when = "2024-05-02"
+version = "0.8.0-beta.3"
+when = "2024-05-03"
 user-id = 7551
 user-login = "kanru"
 user-name = "Kan-Ru Chen"
 
 [[publisher.chewing-cli]]
-version = "0.8.0-beta.2"
-when = "2024-05-02"
+version = "0.8.0-beta.3"
+when = "2024-05-03"
 user-id = 7551
 user-login = "kanru"
 user-name = "Kan-Ru Chen"