He chatted cheerfully with the foreign guests, not the least bit constrained.
Tips
history
From Xin Qiji's Song-dynasty ci 《念奴娇·赠夏成玉》: 谈笑风生颊 - literally 'talking and laughing, the wind rises at one's cheeks.' 风生 paints how animated conversation seems to stir a breeze.
mistakes
Subject is almost always people, describing relaxed, flowing, witty talk. Don't confuse with 谈笑风声 - a common wrong-character error: 生 not 声.
