How to do this?

Lord Lin Yue, regarding this hidden quest, the hint indicates that 'Restaurant 1' must be completed within 3 days after reaching level 12. From my investigation, unlocking new restaurants usually requires collecting enough keys. I suggest prioritizing kitchen equipment and ingredient upgrades to improve efficiency. If the quest progress isn't updating, you might also want to check your internet connection or contact the platform directly. Don't let this gem reward slip away!

Haven't played it