[yàn guò bá máo]   

雁    过    拔    毛    大雁飞过时也能拔下毛来。原形容武艺高超。后比喻人爱占便宜，见有好处就要乘机捞一把。 贬义>

大雁飞过时也能拔下毛来。原形容武艺高超。后比喻人爱占便宜，见有好处就要乘机捞一把。

He rooks everyone he can get his claws into

雁过拔毛    雁过留声    雁去鱼来    雁影分飞    雁塔题名