《太平广记·卷四百二十一·龙四》
于是蔡霞赠送十万钱给刘贯词，又交给他一封书信，交待道： 在客栈里突然有了一个周济你的想法，就忘了仪容礼貌，立即就表露出内心的真诚。
霞于是遗钱十万，授书一缄，白曰： 逆旅中遽蒙周念，既无形迹，辄露心诚。
Cai Xia gave Liu Guan 100,000 yuan and handed him a letter, saying: suddenly had the idea of helping you in the inn, but forgot your manners and immediately expressed your inner sincerity.
<s>[INST] Kindly elucidate the central themes in this passage in English: 霞于是遗钱十万，授书一缄，白曰： 逆旅中遽蒙周念，既无形迹，辄露心诚。 [/INST] Cai Xia gave Liu Guan 100,000 yuan and handed him a letter, saying: suddenly had the idea of helping you in the inn, but forgot your manners and immediately expressed your inner sincerity.</s>
Kindly elucidate the central themes in this passage in English: 霞于是遗钱十万，授书一缄，白曰： 逆旅中遽蒙周念，既无形迹，辄露心诚。
user
Cai Xia gave Liu Guan 100,000 yuan and handed him a letter, saying: suddenly had the idea of helping you in the inn, but forgot your manners and immediately expressed your inner sincerity.
assistant