preface Explanation 1: This story is different from all the Wesleyan stories in the past. There are no vigorous, twists and turns. Explanation 2: When the person narrates, his speech is very messy. Although he has sorted it out, he still sees chaos. Of course, there is no clue to follow in the chaos, but he has to be careful. Explanation Three: There is no Explanation Three, two explanations are enough. Ni Kuang 200205201705 San Francisco