First of all, the monster hunter p3' s Taidao is perfect and can deal with almost all monsters. The upgrade route of Taidao with the strongest attribute is as follows:

No attributes: Gu Yunjie Taidao-Yun Jie Taidao-Tiedao-Tiedao Deed-Tiedao Joy-Xunlong Saber-Xunlong Reform-Green Shadow Saber-Moon Shadow in Blast Knife.

Fire attribute: ancient cloud-cloud-cloud change-osteotome canine tooth-bone knife tip tooth-dragon sword double fire-dragon sword double inflammation-dragon sword double red lotus-dragon sword silver

Thunder attribute: ancient knot cloud-knot cloud-knot cloud change-blood cross knife-blood cross knife change-deep red cross knife-lost Eden. After that, you can change the king's tooth knife into thunder or lightning thunder

Ice Properties: Ancient Cloud-Cloud-Iron Knife-Ice Blade-Ice Blade Ice Flower-Liu Hua Heavy Ice Pill.

Water Attribute: Nanman Knife-Nanman Knife Change-Nanman Knife Cutting Grass

Dragon attribute: ancient knot cloud too-knot cloud too-green bear too-green bear change-broken tooth too knife-broken tooth knife too knife, and then you can turn black claws.

I'm using a hidden claw now, which is quite powerful.