千万 qiān wàn ten millioncountlessmanyone must by all means Example sentences 下雨天开车千万要小心。 xiàyǔtiān kāichē qiānwàn yào xiǎoxīn. When driving on rainy days you must be careful 千万不要忘记带教科书。 qiān wàn bùyào wàngjì dài jiàokēshū. You absolutely must not forget to bring your school books