A purple clay teapot with gold-painted bamboo joint design and inscribed poetry, bearing the mark "Bingxin Daoren," dates to the Taiping Heavenly Kingdom period. "Bingxin Daoren" may refer to Cheng Shouzhen, who lived during the Guangxu reign and died in his thirties during the Republican era. A small beige clay teapot marked "Xuantong First Year," with "Baoxian" inscribed on the handle. A purple clay teapot marked "Xuantong First Year, First Day of the First Month," with marks including "Dasheng," "Lin," "Disi," "Xi," and "Shouzhen" on different parts of the old handle. These individuals all lived during the Guangxu period. Dasheng and [another person] were brothers, surnamed Fan, and the entire family made teapots. A flat purple clay teapot marked "Made in the Xinmao Year of Kangxi," with "Yixing Purple Clay Guaranteed" inside the lid. The appearance of the "Guaranteed" seal dates to the late Qing period. A black clay teapot with copper handle marked "Made in the Kangxi Year," a Guangxu period work. This type of teapot was fired in Yixing, then sent to Yantai to be blackened. A purple clay teapot with lifting handle marked "Guoliang," a late Qing work. Guoliang's original name was Yu Guoliang, who died in 1938 at over 60 years of age. A small flat purple clay teapot marked "Shao Liangsheng," a Republican period work. "Songzhixuan" was the name of a Shanghai shop. The person who carved the characters on this teapot was called "Ruoshui." The shop owner's surname was (Yao) Shouqian. A purple clay teapot marked "Songzhixuan" by Shao Liangsheng. At the same time, regarding questions of authenticity concerning some purple clay pieces in the Palace Museum collection, Gu Jingzhou also put forward his own clear views: > A purple clay teapot with plum blossom poetry inscriptions marked "Xingyouhengtang" from the Daoguang period is a fake. The base mark "Jiang Zhenxiang Made" and the "Xingyouhengtang" mark do not correspond chronologically. Jiang Zhenxiang was a late Qing Guangxu period figure, inconsistent with the Daoguang era. A small red clay teapot marked fourth year of Jiaqing is authentic. A purple clay Buddha's hand cup marked "Xiang Shengsi" and a purple clay plum blossom cup marked "Shengsi" are both fakes. When Shengsi lived is unclear. The Nanjing Museum has a peach cup marked Shengsi that is very exquisite.