(ECNS) -- Born in 1997, Chinese-Malaysian twin sisters Wang Siying and Wang Si'e came to Nanning five years ago.
They are now learning Chinese at Guangxi University in order to learn more about China.
They have visited many cities, including Shanghai, Nanjing and Chengdu during their holidays.
China's four new inventions, including the high-speed rail, mobile payment, bike sharing and online shopping, have become well known around the world and made lives more convenient.
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