Tǒ͘-kong道光

the Daoguang era

the Daoguang era (a Chinese era name; the era of that emperor's reign, from 1821 to 1850); the Daoguang Emperor (the seventh emperor of the Qing dynasty)

English Wiktionary, “道光” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E9%81%93%E5%85%89 · confidence: Medium (Wiktionary, Hokkien)