Trademark issues. Tengzhou Zhuangyuan Mansion, formerly known as Tianhe Garden, is located in the Tengzhou section of Tengzhou region. The community was completed in 2009 and developed by Tengzhou Tianyi Investment Real Estate Co., Ltd. Since the Tianhe Garden trademark has been registered, it was later renamed Tengzhou Zhuangyuan Mansion, Tengzhou City. A county-level city under the jurisdiction of Shandong Province and managed by Zaozhuang City, it is one of the earliest birthplaces of civilization in the Chinese nation.