四明尊者教行錄 4.145

4.145

(When Zongxiao compiled and recorded the letters of Tiantong and Siming, he only obtained five exchanges. According to Cao'an, since he said there were about twenty in all, quite a few have indeed been lost. Items like Master Xian's tea placard have likewise ceased to be heard of. If any reader of this book happens to possess them, I would be fortunate if they were presented to me so as to make it complete.)