Generate a question that has the following answer: His bravado for the following movie plot: This tale is based upon the legends told of ancient times in the old Russian city of Novgorod (the capital of Novgorod republic). Novgorod's merchants are feasting in a gorgeous palace. A young gusli player named Sadko is bragging that he can bring to their land a sweet-voiced bird of happiness. The merchants mock him for his bravado, and tell him his quest is impossible. Nevertheless, Sadko sets off on a travel to bring the bird of happiness to Novgorod. He is offered help by the daughter of the Ocean King - she is mesmerized by Sadko's singing and is in love with him. Sadko visits many lands in his search of the bird, including India, Egypt and other countries. Sadko is unable to capture the bird of happiness, and returns empty handed. But on his return to Novgorod, Sadko realizes that there is no better land than his homeland, and there is no need to go far in search of one's happiness.
A:
What do the merchants mock Sadko for?