Zài / tánpàn / zhōng / xuéhuì / chá / yán / guān / sè / yǒuzhù / yú / tiáozhěng / shuōhuà / fāngshì在谈判中,学会察颜观色有助于调整说话方式。During negotiations, learning to read people's expressions helps you adjust the way you speak.