唐

A compound character:

庚 (gyeong / gēng, a celestial stem; sometimes glossed as “star”)

口 (“mouth”)

Together they form 唐, which in early usage denoted a great hall, wide and spacious building, later extended to mean grand, expansive, magnificent. From this came the dynastic name “Tang.”

唐朝 (당조 / Tángcháo) — the Tang dynasty

唐人 (당인 / Tángrén) — Chinese person

唐詩 (당시 / Tángshī) — Tang poetry (a classical genre)

荒唐 (황당 / huāngtáng) — absurd, preposterous

堂堂 (당당 / tángtáng) — dignified, imposing (shares phonetic 唐)

唐慌 / 唐惶 — to be flustered, bewildered

空言唐語 — empty boasting, loud talk

The Tang dynasty is considered a golden age of Chinese culture, poetry, art, and international exchange. The name “Tang” became synonymous with China itself, as in 唐人街 (“Chinatown”).

In Korean, 당나라 is often referenced historically and culturally, sometimes even in idioms.

The sense of “boasting” or “loud talk” likely developed from the character’s association with “grand, expansive, excessive.”