Jiang Xiao didn't go to the Zhongyuan province directly. As early as the 2017 World Cup, Jiang Xiao had once formed a team with hou Mingming and Zhao Wenlong under Fang Xingyun's leadership. They went to xudu city in the Zhongyuan province to prepare for the preliminary round of the national team and headed to the top of the ancient tower to familiarize themselves with the biological characteristics there.
In other words, Jiang Xiao had opened the map of Xu Du city before.
Yi qingchen's house was located in Luo Yi city, Zhongyuan province. If he took the high-speed rail from Xu Du city, he would reach there in slightly more than an hour.
In order to give Gu Shi 'an enough time, Jiang Xiao and Yi qingchen agreed to hold the apprenticeship ceremony on the 15th of August. Jiang Xiao and the others had stayed in Guixi province for two days, and it was only the 10th of August, which was a few days away from the day of apprenticeship.