Shuangjiangtou Daocai, a delicacy in Tongnan, originated from the imperial dining room in the late Ming Dynasty. It is a special-grade dish for the royal family, and was introduced to Tongnan after several twists and turns. Shuangjiangtou Knife in Tongnan is delicious and unique, and many diners are full of praise. Every grandfather in Tongnan County went out for a cruise, and he had to order a dish of Shuangjiangtou Knife in Junziju, Shuangjiang Ancient Town.