chēdàoshānqiánbìyǒulù,chuándàoqiáotóuzìránzhí

Traditional: 車到山前必有路，船到橋頭自然直

lit. When we get to the mountain, there'll be a way through and when the boat gets to the pier-head, it will go straight with the current. (idiom) / fig. Everything will turn out for the best. / Let's worry about it when it happens. / It will be all right on the night.