Hi, can advise how to go from Tianjin Zhujiang Road to Huangya Pass, and from Huangya Pass to Porcelain House.

To the pass, please take a bus from TJ Hebei Long-distance Bus Station to reach Jixian County in around 100 minutes and the bus fare is around 40RMB per adult. Upon reaching Jixian, you can hire a local car to get the Huangya Pass and it charges around 15 to 20RMB per person.
From Zhujian Road to the bus station, you can walk to the Ming Du Xin Yuan Station to take the bus line 605 to Dong Bei Jiao Station. Then change to line 1 to Gong Cheng Xuan Yuan Station. After that you can easily walk to the Hebei Long-distance Bus Station.

Then you still need to go back to Hebei Bus Station and then interchange a local taxi to get to the Porcelain House directly. The taxi fare is around 20 to 25RMB.