So you don't ask me. . . .
It takes only 1 hour 10 minute to fly from Tianjin to Zhengzhou, and it runs twice a day, both in the afternoon, so you can arrive in Zhengzhou at 8 o'clock at the latest, and then take the newly opened airport bus from Zhengzhou Airport for about 40 minutes (15 yuan) to Zhengzhou Railway Station. If you feel that the bus is not guaranteed, you can take a taxi, which is about 100 yuan.
There is a train from Zhengzhou Railway Station to Weihui (well, it's Jixian). Sit for an hour and twenty minutes. Theoretically, 16 should be able to catch up with K 180 where 10 stops, and there are still seats at the starting station. Hard seat is only 17 yuan.
Do you think this will work, young master? Give it to me ~