ㄧㄡˇyǒuˇshǐㄧㄡˇyǒuㄓㄨㄥzhōng

  1. 開頭結尾比喻做事貫徹到底醒世恆言··獨占花魁》:三朝之後丈夫厚禮分送相知寄頓箱籠從良信息有始有終。」拍案驚奇·》:如此足見有始有終。」有始有卒」。善始善終有頭有尾虎頭蛇尾有頭無尾有始無終

where there's a start, there's a finish (idiom)​; to finish once one starts sth, to carry things through, I started, so I'll finish.
(expr. idiom.)​ du début à la fin