In November of that year, the Zisha Craft Cooperative recruited a second batch of thirty-five students. As the student cohort continued to expand, Shu Fengying, Gao Haigeng, Wang Yajie, Shi Jihua, Wang Hongjun, Shan Shufang, Wu Yaping, and others successively became disciples under Master Gu. For these young students gathered under his tutelage, Gu Jingzhou personally and meticulously taught the craft of teapot making, while also carefully instructing them through words and deeds on the proper attitudes toward conducting oneself and handling affairs. He once told Li Changhong and Gao Haigeng, who joined the school later: "From now on, you two should study together as brothers, and must not be tainted by the bad habits of jealousy that plagued our old profession..." During the cooperative period, in addition to stamping his own signature seal inside the lid, Gu Jingzhou also added the seal "Produced by Yixing Tangdu Pottery Production Cooperative" on the bottom of his works. This handling method not only reflected the cooperative model, but also preserved the proper intellectual property rights for the author himself. The "Three-Legged Cloud Shoulder Ruyi Teapot" is a representative work from this period. Gu Jingzhou had previously made a ring-foot version of this design before Liberation. The cooperative period work preserved the basic characteristics of the original form, but modified the lower portion to a three-legged style. The outward-extending feet extended the curved arc of the pot body, making the work's bearing appear even more majestic and powerful. --- [1] Edited by Shi Juntang: *Zisha Research (Volume 2)*, Shanghai: Shanghai Ancient Books Publishing House, December 2007 edition, p. 163