If you pursue perfection, you'd better fill it up, and then jump to level 60 with more than 2,000 W of experience. If you don't pursue perfection, 50 points is enough. Higher skills are also useful, and the added value is quite large. 49 is a reward, experience and reserve. Others don't need to spend RMB on skills. It's all reward reserves. If you're lucky, you can draw a high sign or something.