Today’s word of the day is: lăo  sī  jī 老司機 insider   老 [lăo]：old 司機 [sījī]：driver [noun]: We say ‘someone is a 老司機’ to imply that s/he knows something extremely well.     Examples:   Tīng tā shuōhuà jiù zhīdào, tā shì yīge lăo sījī. 聽他說話就知道，他是一個老司機。 Based on what he said, I can tell that … Continue reading Everyday Chinese: 老司機