茅廬

thatched cottage

surname Mao

reeds / rushes

hut

venturing from one's thatched hut for the first time (idiom) / young and inexperienced / novice / greenhorn

lit. three humble visits to a thatched cottage / cf famous episode in the fictional Romance of Three Kingdoms 三國演義|三国演义 in which Liu Bei 劉備|刘备 recruits Zhuge Liang 諸葛亮|诸葛亮 (the Hidden Dragon 臥龍|卧龙) to his cause by visiting him three times