curl --location --request POST '/open/api/basic/exchange-rate/query'
{
"exchange_rate_type_code": "0001",
"reference_currency_code": "CNY",
"inquiry_currency_name": "CNY",
"rate": 2,
"exchange_rate_date": "20200320",
"exchange_rate_id": "001",
"cash_remittance_price": 2,
"cash_purchase_price": 2,
"purchase_price": 2,
"remittance_price": 2,
"bank_code": "ICBC"
}