The Golden Silkworm.

The story is about the two Yong brothers. The brothers are the best cloth traders of Phra Nakhon city. Nott has to travel to the Mien tribe in order to get the best silk worm for their cloth trade. He ends up finding love with Xa Sia and they return to live together in Phra Nakhon. When she comes to live with the Yong family, she sees the world full of jealousy and envy and competes for a way to deal with the cruel world.