Meaning of lòu miàn:
lòu miàn
露面
Verb
to show one's face; to appear (in public)
Tā hěnjiǔ méiyǒu zài jùhuì shàng lòumiàn le.
他很久没有在聚会上露面了。
He hasn't shown up at the gatherings for a long time.
Tā hěn shǎo zài gōngzhòng chǎnghé lòumiàn.
他很少在公众场合露面。
He rarely appears in public.