Desert Island Survival: I Can Craft and Upgrade

[Trope Subversion + Survival + Crafting + Building + Farming]

A storm at sea wrecks a ship, leaving Xue Bai and a group of female survivors stranded on a deserted island. From the start, he gains the ability to combine items and upgrade them.

Combine: [Seawater + Seawater = Fresh Water + Salt] [Stick + Stick = Torch] [Small Fish + Small Fish = Big Fish]

Upgrade: [Weeds upgraded to Wheat] [One Spider upgraded to One Pig] [Canoe upgraded to Small Sailboat]

A woman: We're women and you're a man. This is dangerous! Leave!

Xue Bai: What makes you think you can order me around?!

Woman: ?

Xue Bai: The strong prey on the weak, and the fittest survive!

Woman: ??

Xue Bai: Those who side with me prosper, and those who oppose me perish!!

Woman: ???

Oh no, this guy isn't like the ones in novels! Why doesn't he just leave when we tell him to?!