Is Lianguan that Han Yu of Tang Dynasty traveled to located in Liantian or Shangzhou?The key to this question lies in the correct understanding of mileage of"Southeast Liantian"in documents of Tang Dynasty,and the correct understanding of"Southeast Liantian"is closely related to the concept of"traditional mileage".

Study on the Problem of Forest Ecological Environment Compensation in Lantian County, Shaanxi Province;

Evaluation on comprehensive service benefits of the forest ecosystem in Lantian County

Study on Economic Benefit of Returning Cultivated Land to Forests ——A Case Study of Tiandong County of Guangxi;