```javascript
WXAPI.kanjiaHelp(token, kjid, joiner, remark)
```
+ token current login token
+ kjid is the kjid of a bargaining activity returned by the product bargaining setting interface.
+ joiner is the user number that initiated the bargaining, that is to say, for whom to bargain?
+ remark This parameter is not required. You can leave a message when helping a friend to bargain, and you can read it when obtaining the bargaining record.
```json
{
"code": 0,
"data": {
"cutPrice": 4.66,
"goodsId": 6765,
"remark": "",
"uid": 2017654
},
"msg": "success"
}
```
+ cutPrice The amount that will be cut this time