qǐng zhùyì qiānzhèng yǒuxiàoqī rùjìng cìshù hé měicì tíngliú qīxiàn búshì tóng yí ge gàiniàn

请注意签证有效期、入境次数和每次停留期限不是同一个概念。

Please note that visa validity, number of entries, and duration of each stay are not the same concept.