旅游名城敦煌市区之内 ,现有的十多棵古树枝繁叶茂 ,加上改革开放以来新栽植的景观树国槐、圆冠榆、银白杨、松柏等 ,与新修建的高楼大厦交相辉映 ,把一个历史文化名城装扮得美丽而优雅。其中有几株树龄近三百年的古树 ,能活到今日是与一位年逾七旬的离休老干部孙德发分不开的 Within the urban area of ​​Dunhuang, a famous tourist city, the existing 10-odd ancient trees flourish together with newly planted landscape trees such as Sophora japonica, Oriental elm, poplar, pine and cypress trees since the reform and opening up, which paved the way with the newly constructed high-rise buildings , A beautiful historic city and elegant dress. Among them, there are several ancient trees that have been nearing 300 years of age and can live up to today with Sun Defa, a retired veteran cadre who is over seventy years old