bǎo diàn
king's palace
throne hall
dà xióng bǎo diàn
Hall of Great Strength, main hall of a Buddhist temple containing the main image of veneration 大雄[da4 xiong2]
wú shì bù dēng sān bǎo diàn
lit. One doesn't visit a temple without a cause. (idiom)
fig. to visit sb with an ulterior motive (esp. to ask for sth)
having a hidden agenda