tā / zài / xìn / de / mò / wěi / xiě / xià / zì / jǐ / de / cǎo / zì / xiǎn / de / qiān / xùn / ér / yǒu / lǐ

他在信的末尾写下自己的草字，显得谦逊而有礼。

At the end of the letter, he wrote his humble name, appearing modest and polite.