[经] guarantee on first demand
bǎo zhèng zhài quán rén tí chū shí lì kè lǚ xíng ㄅㄠˇ ㄓㄥˋ ㄓㄞˋ ㄑㄩㄢˊ ㄖㄣˊ ㄊㄧˊ ㄔㄨ ㄕˊ ㄌㄧˋ ㄎㄜˋ lv3 ㄒㄧㄥˊ