Question: 春秋航空最近一个交易日的收盘价
Answer: 必答点：春秋航空的最新收盘价
精度要求：仅允许四舍五入误差
Date: 2025/8/14
Reference data: {"601021___SH":{"RT_TIME":"150005","RT_LAST":"52.300000000000004","RT_DATE":"20250814"}}