How to connect the seven constellations of Ursa Major?

The steps of connecting the Chamber of Secrets to the Seven Constellations of Ursa Major are as follows:

1. First, click to open the box in the item bar in the Chamber of Secrets escape game to complete the mini-game.

2. Secondly, connect a constellation Ursa major according to the hint of the dotted line.

Finally, open the box and pick up the key.