How long does it take for the duke of mount deer to reach 100 level?

If you are online for 6-7 hours a day, it used to be fast. You only need to upgrade to do gang patent tasks every day. More than 2 weeks at most. It's impossible now. Now upgrading also requires skill level. In this case, it is much slower. If you are a RMB player yourself, this is not a big problem. You can buy gold coins to gain some skills. If you don't do this, the upgrade will be slow.