20 17 12 3 1. according to the announcement issued by Xi' an tiandu real estate co., ltd., the delivery time of Chang' an guosetianxiang phase I is 20 17 12 3 1. Chang 'an Guosetianxiang is located at No.989, West Chang 'an Street, South University Town, Chang 'an District. The developer of Chang 'an Guosetianxiang is Xi Antiandu Real Estate Co., Ltd. .. Xi Antiandu Real Estate Co., Ltd. was established on 200 1, located in Xi, Shaanxi Province, and is an enterprise mainly engaged in real estate.