(zài, ㄗㄞˋ) (located) at; (to be) in; to exist; in the middle of doing sth; (indicating an action in progress) [CE-DICT]
兄
(あに) พี่ชาย(ตัวเอง) [LongdoJP]
(あに) (n) (hum) older brother; (P) [EDICT]
(けい) (n,n-suf) (1) (See 兄・あに) elder brother; (pn,adj-no) (2) (fam) (male) pronoun or suffix used in reference to an older brother figure; Mister; Mr [EDICT]
(にい) (n-suf) (1) (fam) used after the name of someone who is an older brother figure; (n) (2) (See お兄さん) used with various honorifics to mean (older) brother [EDICT]