Excle upload upload not fixed format, time/text/digital/percentage/score... Can be uploaded.

Requirements: upload what form, return what form

Upload time format to upload the 2021-05-06 back to 2021-05-06, for example, the 2021-05-06 09:09:09 return 09:09:09 uploaded on May 6, 2021, 2021-05-06 returns on May 6, 2021