[经] absence of any earlier complaints

yǐ wǎng méi yǒu kòng sù shì lì ㄧˇ ㄨㄤˇ ㄇㄟˊ ㄧㄡˇ ㄎㄨㄥˋ ㄙㄨˋ ㄕˋ ㄌㄧˋ