Why do architects always stay up late? Why don't they arrange their time properly?

The main reason why architects stay up late is not that they don't arrange their time reasonably, but that their work often changes temporarily (the plan can't keep up with the changes), resulting in a great workload. This temporary change often comes from the superior and Party A. The architect's drawings have a complete evaluation process. In this process, Party A often makes requests from time to time due to lack of professionalism, that is to say, plans and drawings need to be revised, so it is normal to often work overtime and stay up late.