简介:Before dawn the next day, Zhu Cixang set out and arrived at Xianghe at 9 a.m.. Like Tongzhou, Xianghe was also undergoing extensive construction work to heighten and strengthen the city wall. Xianghe is the only way for the Beijing-Hangzhou Grand Canal to divert grain from the south to the north. It is a choke point, so Xianghe is also called the gateway to the capital and the throat of water transportation.