For example, A 1 cell is used to pull down Beijing, Shanghai, Tianjin and Wuhan.
Select a1> Data > data validity > permission > sequence > source: fill in Beijing, Shanghai, Tianjin, Wuhan,
Note that place names should be separated by commas, and never use Chinese commas!
After confirmation, a drop-down arrow will appear in A 1. Click to realize selective input, and the drop-down menu is finished.
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