Traditional Culture Encyclopedia - Almanac inquiry - How to change the points in the table to the form of year, month and day?

How to change the points in the table to the form of year, month and day?

Change the point to year, month and day format?

Yes 1990.09.09. Is this format changed to date format?

Suppose in A 1, the formula is:

= text (replace (a 1, "","/","YY YY mm dd")

What could have been achieved or happened.