What does it mean for an old father-in-law to give his son-in-law a watch?

The meaning of the old father-in-law giving his son-in-law a watch is this:

1. I hope my son-in-law can cherish time, grasp it well and do things more efficiently.

I hope to remind my son-in-law to cherish time through the watch. Time flies, wait for no one, don't waste time.

I hope my son-in-law can distinguish time, do the right thing at the right time and don't waste time.

In traditional culture, giving a watch also means farewell, which means looking forward to leaving.

I hope my son-in-law can always wear a watch to show his concern.

In short, the old father-in-law gave his son-in-law a watch in the hope that he would cherish time, grasp it well and do things more efficiently.