In 1987, he finished a survey of the western section of the Ching dynasty Patungkuan Trail over Mt. Yushan, and uncovered many sections of well-preserved Ching stone paving. At the site of a Ching military camp, he collected numerous fragments of blue and white porcelain crockery, which were identified by the National Palace Museum as products of the Dehua kiln in Fujian Province.
七十六年，又完成清朝開鑿的「八通關古道西段」調查，清理出多段完整的清朝石板步道，在清營址拾獲許多青花瓷碗盤殘片，經故宮鑑定為福建德化窯產品。