Afterwards, her company hired a Chinese tutor from Beijing who spoke in a thick northern accent. Later she told me that after an hour of practicing to speak with a northern accent in class, her whole mouth, and especially her tongue, was exhausted!
後來公司為她請了中文家教，老師是北京人，說得一口京片子，舌頭要捲起還要碰到上顎，朋友說，一小時的課下來，最累的是舌頭！