你听说过“代购”吗？代购现在在中国乃至亚洲都很流行，一方面，一些产品在中国国内很难买到，或者价格过于昂贵；另一方面，出于对国内假冒伪劣品的担忧，他们更喜欢来自国外的安全产品。这课的HSK词汇包括 明确 （5）从事 （5）意味着 （6）约束 （6）范畴 （6）典型 （6）担保 (6）框架 （6） Have you heard of 代购？It’s very popular in Asia especially China where consumers want to buy products not available in China, are more expensive even if they’re available or they don’t feel secure to buy the same products in China due to counterfeit/safety issues. The idiom 有章可循 means these types of buy and sell activities will henceforth have rules to follow.