in the process of (doing something or happening); while (doing)[cedict]
向
xiàngㄒㄧㄤˋ
direction; orientation; to face; to turn toward; to; towards; shortly before; formerly; to side with; to be partial to; all along (previously); surname Xiang[cedict]
正门
zhèng ménㄓㄥˋ ㄇㄣˊ
the formal entrance, main gate (to a university etc); portal[cedict]