How much love does the electronic organ of Light Encounter need?

That's a piano. It needs 10 hearts. The exchange method is as follows:

1, enter the map "Gu Xia" first after entering the game;

2. Come to the audience platform at the end of Gu Xia;

3. You can find Qin Zu in the audience and choose to accept him directly here;

4. After receiving it, I came to the end of Gu Xia to release my ancestors;

5. Then come to the star-gazing platform of the situation and find the ancestor of cheering action;

6. You can unlock the piano on the right side of the game.