Read this: In mid-2015 the government of Zhejiang recognised folk religion as "civil religion" beginning the registration of more than twenty thousand folk religious associations. Buddhism has an important presence since its arrival in Zhejiang 1,800 years ago.
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): What has an important presence in Zhejiang since its departure 1,800 years ago?
unanswerable