It is better to hit the sun than to choose the day. Let nature take its course!

It is better to choose a day than to bask in the sun. That's it.

It is better to choose a good day than to bask in the sun. It means that it is better to do it now than to choose another good day. It means everything goes with the flow. If you want to do something, you'd better do it at once.

In ancient China, time, location and harmony were important activities, such as weddings, funerals and celebrations. You have to choose a good day to break ground and sacrifice or even bathe. This is the so-called "choosing a day". And "bump into the sun" is to choose a day at random, and when it happens, it is to speak appropriately in many contexts. In fact, choosing a day is more like a psychological comfort. It is not necessarily bad to choose a day casually, so there is a saying that "it is better to choose a day than to hit it."