力图为汉长安城直城门遗址环境的保护提供一个基础性质的研究。
Overall , try to provide the site of Zhi Gate with a basic research on protection of the environment properties .
汉长安城直城门是丝绸之路所经过的第一个城门，是丝绸之路的起点。
And Zhi Gate of Han Chang ' an City was the first gate that Silk Road going through after its starting point .
直城门