How to open the original mirage sacrifice ground?

The opening ceremony of Genshin Impact Mirage Festival is as follows:

Tools/raw materials: OPPOReno7, ColorOS 12. 1, Shen Yuan 3. 1.

1. Step 1: Open the map, click the east direction of Red Tomb, and then send it, as shown in the following figure.

Step 2: You will see two bright spots when you come in. At this time, just jump out of the hole between the two light spots, as shown below.

3. Step 3: You can see this red gate by rotating the viewing angle in the flight map. Open the gate and open the copy of Phantom Sacrificial Field, as shown below.