介

jiè

agent, go-between, intermediary; to introduce; shell, armor

HSK 2 4 丶

质

zhì

essence, nature; material, substance

HSK 4 8 丶

访

fǎng

to visit; to inquire, to ask

HSK 5 6 丶

问

wèn

to ask about, to inquire after

HSK 2 6 丶

控

kòng

to accuse, to charge; to control; to sue

HSK 5 11 丶

制

zhì

system; to establish; to manufacture; to overpower

HSK 5 8 丶

层

céng

layer, floor, story, stratum

HSK 3 7 丶