Yao Jiangyuan head at Tai Lan Lan Town, Village, by the two one after the spring well composed, whether it is day dry and cold, spring water all year round by the endless stream, the top is carved with a "Yuyao Jiang Zhengyuan" five vigorous italics characters The monument, about 30 meters west, the Standing Committee of Zhejiang Provincial Party Committee and Ningbo Municipal Party Committee Secretary Bayin Chaolu inscription of "Yao Jiangyuan head, young forest" in large letters.

In 1990, Yuyao City Heyuan expedition organized by the three-year field trips and measuring four to report on March 3, 1993 by Zhejiang confirmed that the Vetting Committee of experts, come to the final conclusion: the source of Yuyao River InBig Lan Lan Town, Village, head east slope of the left post sleep.