tā zuǐshang shuō jīnqián bù zhòngyào, kě zhēn dàole tāo qián de shíhou bǐ shéi dōu jìjiào

他嘴上说金钱不重要，可真到了掏钱的时候比谁都计较。

He says money isn't important, but when it's time to open his wallet he's stingier than anyone.