碍于

碍于	ài yú	to be constrained by; due to (a constraining factor)
碍	ài	to hinder / to obstruct / to block
于	Yú	surname Yu
于	yú	to go / to take / sentence-final interrogative particle / variant of 于
于	yú	(of time or place) in; at; on / (indicating any indirect relation) to; toward; vis-à-vis; with regard to; for / (indicating a source) from; out of / (used in comparison) than / (used in the passive voice) by