The superior leader is the one you have the most contact with at work. In addition to working hard, getting along well with the leader is also related to your career prospects. The leader is going to have a birthday, so of course you have to give a small gift as a congratulation, not to mention that the leader invites you to go. However, giving gifts to leaders is still very particular. It is not good to give too little, and you can't afford too much, so I will give you some of my small suggestions:
1. You can give a set of hardcover collection books, such as Sun Tzu's Art of War, or the Four Great Classics. It looks very unique and classical, and it can also set off the leader's taste. The price is acceptable.
2. Ask for a painting as a birthday gift for the leader. I believe that the leader will like it very much if it is a gift with artistic temperament, and he will not have a low evaluation of your taste.
3. The simplest thing is to give a bottle of good wine, but there are more fake wines recently, so you must choose carefully when buying, and it will be bad if you don't give fake ones.