封面左下角魅力数值，越高 = 作品越好看
25p
5.0 
24p
4.6 
22p
3.4 
24p
2.6 
28p
28p
22p
22p
29p
24p
22p
26p
23p
22p
22p
21p
23p
30p
25p
31p
21p
21p
22p
22p
24p
21p
24p
22p
36p
23p
艺图语