Ming: It means as fragrant as tea.
"Shuo Wen Jie Zi" explains the cloud: tea buds also. In terms of reputation.
Xi: Classical Chinese auxiliary words are equivalent to "ah" and "ya" in modern Chinese.
"Shuowen Jiezi" explains the cloud: words are also recorded. From the beginning, the Eight Elephants became more and more scarce. Everyone who belongs to Xi follows Xi.