4️⃣弟

#fourth brother #younger brother #si di #4th brother #family rank #四弟

👨‍👩‍👧‍👦➡️🐒🐒➡️🐒

#biological hierarchy #taxonomy level #family rank #species rank #genus rank #classification system #systematics

🥉👨‍👩‍👧‍👦

#third generation family #descendant generation #family rank #grandchild generation #3rd gen