#只能用四个字, how to prove where you are (can not show the name of the province, city, dialect can) # "Imperial Tomb Capital": the ancient capital of the Thirteen Dynasties, the first unified country built the capital here, in the most prosperous Tang Dynasty here became the world's yearning place, buried underground are princes and generals, and now the subway construction, the busiest is not the subway construction company, but the cultural relics bureau. Guess where I'm from. [Thinking]