what you want to ask is where do I change trains when I take bus No.814 from Langqingyuan District 3 to Jindi Beijing Block 1? Hugezhuang Station. According to the Baidu map, the third area of Langqingyuan is located in Laotonghu South Road, Lucheng Town, Tongzhou District, Beijing, and Jindi Beijing Block 1 is located at the intersection of Xusong Road and Songtong Road in Tongzhou District, Beijing. Take bus No.814, get off at Hugezhuang Station and transfer to T18.