How did Zeus get the sail?

When you come to the observation deck, click on Zeus at the top of Oracle Bone Inscriptions to reach the device as shown in the figure.

After the story is over, an activity panel will appear. The activity rewards include: Zeus essence, universal lettering crystal, Olympus lettering and stunning lettering.

Method 2 for obtaining Sail Zeus:

There are two ways to get * * * by using rice coins:

① One-click acquisition at a price of 50 meters.

(2) Light up the icons of the twelve constellations, and increase the probability from 20% to 5% each time. The price of the first lighting is 20,000 Ter beans, and then the lighting needs rice coins, and the prices are 2, 3, 5, 7, 7, 7, 7 respectively. Because Brother Nishino succeeded in lighting the lamp for the eighth time, it is uncertain whether the total price will exceed 50 meters.