WorkDạ cổ hoài langAlso known asDạ Cổ Hoài LangVọng cổ hoài lang夜古怀郎夜鼓怀郎archival plate · Dạ cổ hoài lang · placeholderThis entry is a stub. The Library is awakening — a longer account is being written.Connected to1 link to entries not yet ingested in the Library.