Idiom Chain

The system randomly presents a four-character idiom with one missing character. Players select the correct Chinese character from the candidate character library at the bottom to restore the meaning of the idiom. The advanced mode enables "first and last character chain", which requires the first character of the selected idiom to be the same as the last character of the previous idiom, forming a logical chain reaction, effectively improving the efficiency of vocabulary recall and the ability to judge the meaning of the idiom.