In June 1993, Yin traveled to France as head of the Navy General Headquarters 'weapons procurement office to France to present a list of 34 shortcomings of the Lafayette frigates and request modifications. On December 8, an agent of Thomson CSF came to Taiwan for a briefing. Yin went missing the following day, and his body was found in the sea another day later.
八十二年六月海總武獲室上校執行長尹清楓前往法國造艦局拜會，並提出拉法葉的三十四項缺失要求改進，同年十二月八日湯姆生公司代表赴海總簡報，翌日尹清楓即失蹤遇害。