《南齐书·列传·卷二十五》
建康之民汤天获到蛮地行商，对张敬儿的奸计看得一清二楚，使者书信，铁证如山。
建康民汤天获商行入蛮，备睹奸计，信驿书翰，证验炳明。
A citizen of Jiankang, Tang Tianhuo, traveled to a barbarian land for business and saw through Zhang Jing'er's treacherous scheme. He wrote to the emperor, and the evidence was as solid as a mountain.