It can only be said that whether the rush hour is late or not is anyone's guess. When I took this bus two years ago, it was usually 1~2 hours late, and sometimes it was 4 hours late. I did it four times in the last six months, and it's not too late. I also talked to the conductor. He said that there are many stations between Dalian and Shanhaiguan, and the running speed may be slower and later. If the speed is increased later, the other half will be faster, not later. I took the bus for four hours that night, because I stopped by the Yellow River for two hours at night to make way for other cars. As a result, I continued to make way south. My friends in Shanghai hate me, haha. So my opinion is that if you take T 13 1, it will be a little more expensive to go to Tianjin or beyond. As for being late, I think it is a bit unrealistic to expect the train to never be late. I have talked a lot, and I don't know if I can help you. Have a nice trip ~