Happy is the true happy, lost or cover up. This is a kind of self protection, is also a kind of attitude to life.
开心起来是真开心，失落起来也好掩饰。这是一种自我保护，也是一种生活态度。
Self-cover: Cover of a booklet MADE of the same paper as the text pages.
书页纸封面：小册子的书皮和内文，用同样纸张。
Self-cover: Cover of a booklet MADE of the same paper as the text pages.
书页纸封面：小册子的书皮和内文，用同样纸张。
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