Jing-tai: Year 7, Month 4, Day 16
20 May 1456
Si Bu-fa, the son of Si Ren-fa, memorialized as follows: "When my father Si Ren-fa violated the law, I was still very young. When my elder brother Si Ji-fa violated the law, I was still not of full understanding. Now I will not dare to act like my father or brother and am in great fear of the Court's law. I respectfully now send 500 liang of silver in lieu of labour, three elephants, six horses, one gold and silver flask and six cups, four pieces of local brocade, four elephant tusks, four peacock tails and gall bladders from four large snakes (鱗蚺膽四枚). I have also sent persons to offer these in tribute. I humbly pray that the Lord Emperor of Heaven will take pity on me." It was ordered that paper money and silks be conferred upon the envoys.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 35, page 5633/34