[绵延 / 綿延, mián yánㄇㄧㄢˊ ㄧㄢˊ] continuous (esp. of mountain ranges); to stretch long and unbroken; a continuous link; sostenuto (sustained, in music)#24013
[绵里藏针 / 綿里藏針, mián lǐ cáng zhēnㄇㄧㄢˊ ㄌㄧˇ ㄘㄤˊ ㄓㄣ] lit. a needle concealed in silk floss (成语 saw); fig. ruthless character behind a gentle appearance; a wolf in sheep's clothing; an iron fist in a velvet glove#99770