om this era was mostly smoky coal, so windows had to be opened for ventilation. Otherwise, within a quarter of an hour, the smoke would make people's eyes water incessantly.Li Chen remembered that the...hted expression and his hurried thanks, Zhao Xuanji said calmly, "Your Highness the King of Zhao, there is something old man must remind you of.""Elder, please speak, Xiao Wang will listen attentively...