diff --git a/src/content/rules/credit-base-voicebank.mdx b/src/content/rules/credit-base-voicebank.mdx
index f4d9669..d57d4a2 100644
--- a/src/content/rules/credit-base-voicebank.mdx
+++ b/src/content/rules/credit-base-voicebank.mdx
@@ -18,13 +18,32 @@ rationale:
 status: Active
 rule_context:
 mikumod_support: "False"
+relevant_tag_id: 2982
+excerpt: |
+  When in doubt, credit the base voicebank.
+
+  - "Hatsune Miku" → [Hatsune Miku](https://vocadb.net/Ar/1)
+  - "Otomachi Una" → [Otomachi Una (Unknown)](https://vocadb.net/Ar/49701)
 ---
 
-If the voice is only credited by the character name and not further specified, the default choice in most cases should be the base voicebank. In some cases they are labeled with the text "unknown".
+import RuleEmbed from "@/components/markdown/RuleEmbed.astro";
+
+If a voicebank is only credited by the character name, and you can't be sure which version it is used, credit the base voicebank or the umbrella "(Unknown)" voicebank. For example:
 
-- Hatsune Miku = [Hatsune Miku](https://vocadb.net/Ar/1)
-- Otomachi Una = [Otomachi Una (Unknown)](https://vocadb.net/Ar/49701)
+- "Hatsune Miku": [Hatsune Miku](https://vocadb.net/Ar/1)
+- "Otomachi Una": [Otomachi Una (Unknown)](https://vocadb.net/Ar/49701)
 
 There are some exceptions where the base voicebank should be avoided. For example, **Japanese** "Xin Hua" songs should be credited with the V4 Japanese voicebank, since the base voicebank is Chinese.
 
-- "Xin Hua" = ["Xin Hua V4 Japanese (Unknown)"](https://vocadb.net/Ar/60459)
+- "Xin Hua": ["Xin Hua V4 Japanese (Unknown)"](https://vocadb.net/Ar/60459)
+
+[The "unspecified voicebank" tag](https://vocadb.net/T/2982/unspecified-voicebank) can be added to indicate that the credited voicebank is not specified.
+
+Note that the usage of the voicebank could have some clues:
+
+- Not all voicebanks support all languages. As demonstrated with the "Xin Hua" example, the base voicebank is Chinese, but Japanese songs should use the appropriate base voicebank.
+- Check when the song was produced and compare it with the voicebank release date. For example, a Kagamine Len song released before 2010 (release of the next year) can be safely credited to [the V2 version](https://vocadb.net/Ar/15).
+
+## Related rules
+
+<RuleEmbed ruleId={143} />
diff --git a/src/content/rules/credit-earliest-voicebank-version.mdx b/src/content/rules/credit-earliest-voicebank-version.mdx
index f353fe0..524ca83 100644
--- a/src/content/rules/credit-earliest-voicebank-version.mdx
+++ b/src/content/rules/credit-earliest-voicebank-version.mdx
@@ -2,8 +2,9 @@
 name: Credit earliest voicebank version
 id: 143
 entry_type:
-  - Songs
   - Artists
+  - Albums
+  - Songs
 entry_status: Finished
 fe_validations:
 be_validations:
@@ -18,12 +19,31 @@ status: Active
 rule_context:
 mikumod_support: "Planned"
 relevant_tag_id: 4862
+excerpt: |
+  When in doubt, credit the earliest voicebank version. 
+
+  - "Kamui Gakupo V4" → [V4 Kamui Gakupo (Unknown)](https://vocadb.net/Ar/36302)
+  - "Kamui Gakupo (Power)" → [V3 Kamui Gakupo (Power)](https://vocadb.net/Ar/1763)
 ---
 
-If the specific voicebank is only partially credited, there are two options depending which piece of information is omitted:
+import RuleEmbed from "@/components/markdown/RuleEmbed.astro";
+
+If a voicebank is only partially credited, and you can't be sure which version it is used, credit the earliest version.
+
+[The "unspecified voicebank version" tag](https://vocadb.net/T/4862/unspecified-voicebank-version) can be added to indicate that the voicebank version is unknown.
+
+For example, take Kamui Gakupo which credit can be omitted as such:
+
+- "Kamui Gakupo V4": [V4 Kamui Gakupo (Unknown)](https://vocadb.net/Ar/36302)
+- "Kamui Gakupo (Power)": [V3 Kamui Gakupo (Power)](https://vocadb.net/Ar/1763)
+
+Note that the usage of the voicebank could have some clues:
 
-- "Kamui Gakupo V4" = ["V4 Kamui Gakupo (Unknown)"](https://vocadb.net/Ar/36302)
+- Not all voicebanks have vocal versions. For example. The V2 versions of Hatsune Miku and Kamui Gakupo doesn't have vocal versions (e.g. "Power", "Solid", "Original", "Whisper"). You should still use the earliest version of the voicebank.
+- Not all vocal versions available on a version of a voicebank. For example, [the V4 version of GUMI](https://vocadb.net/Ar/41882) has "Fat" versions that has thicker voices. [The previous version](https://vocadb.net/Ar/702) doesn't have them.
+- Not all voicebanks support all languages. For example, the only English version of Hatsune Miku is [the V4/V4X version](https://vocadb.net/Ar/49724), so if [it sounds like it's in English](https://vocadb.net/S/286909), it can be safely credited to [the V4/V4X version](https://vocadb.net/Ar/49724).
+- Check when the song was produced and compare it with the voicebank release date. For example, the Append version of Hatsune Miku was released in 2010 and the V4X version was released in 2016, so [a 2011 song credited to "Hatsune Miku (Solid)"](https://vocadb.net/S/55131) can be safely credited to "[Hatsune Miku Append (Solid)](https://vocadb.net/Ar/78)".
 
-- "Kamui Gakupo (Power)" = ["V3 Kamui Gakupo (Power)"](https://vocadb.net/Ar/1763)
+## Related rules
 
-Always credit the **earliest** "Gakupo Power" bank (V3 instead of V4) along with the ["unspecified voicebank version"](https://vocadb.net/T/4862/) -tag.
+<RuleEmbed ruleId={172} />