Equipment: Huawei Mate 20 Pro
System: MIUI 10.0.0
Software: Underground Castle 3: Poetry of the Soul 1.0.272
1. First of all, if you want to get the palace card, enter the crescent county scene and click on the old pier.
2. Then click the option in the pop-up dialog box to enter the dock.
3. After entering the copy of the old pier, it will fight with BOSS Ezra.
4. After successfully defeating Estella BOSS, you can get a palace card.