《徐霞客游记·滇游日记二十七》
铸造时分为三段制成模子，肩以下先铸成而铜就已用完，忽然间天上落下如珠子一样的铜雨，众人一道用手把铜珠捧来熔化，恰好完成了铜像的头部，所以有了这个名字。
铸时分三节为范，肩以下先铸就而铜已完，忽天雨铜天上下铜雨如珠，众共掬而熔之，恰成其首，故有此名。
When casting, the mold was divided into three segments. First, the shoulder was cast below, and the copper was used up. Suddenly, a copper rain like beads fell from the sky, and everyone used their hands to scoop up the copper beads and melt them. It happened to complete the head of the bronze statue, so it got this name.