Grand Canal,

After departing from Suzhou and continuing up the Grand Canal, Choe's party reached the Lüliang Rapids on April 13, which interrupted canal traffic in the northern part of South Zhili.[27] He wrote that a teams of ten oxen were used to pull their boats through the rapids, while teams of 100 men were used at the next stage of river rapids, the Xuzhou Rapids.[27] He noted the pound locks here that controlled water levels in sections of the canal for safe passage of ships.[27] He described the bustling cities of Linqing and Dezhou in the northern province of Shandong, although he stated that the merchant activity and sizes of these two cities did not match the grandeur of Hangzhou and Suzhou in the south.[27]
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