Professor Wu chose the Shijiazhuang Zhengding Marathon, which was well-registered after failing to draw lots in the second half of 2018. So on October 13, we boarded the train to Jijizhuang. The high-speed train from Tianjin to Jijizhuang is very convenient, and the ticket is 173.

    Zhengding County is affiliated to Shijiazhuang City, and the Construction Society has gone to Zhengding three times to investigate ancient buildings. Unfortunately, due to the impact of the war, relatively complete records have been lost.