1. Go to the mining area

Enter the game and go to the Park.

From the Park, go straight up, then turn right toward the area near the lakeside.

There, you will find NPC tho.mo.

2. Buy mining tools

Tap Trade with NPC tho.mo.

A trade menu will appear where you can buy mining tools for Huyền Không gemstones.

There are 4 types of mining tools, including pickaxes that can be purchased with Coins or Gold, each with different prices.

3. Start mining

After buying a pickaxe, open the Menu on your device.

Find the Mining section, then select Mine Stone.

Note: For the Java or PC version, you may not need to mine manually because there is an auto-mining feature.

4. Sell and exchange gemstones

After mining gemstones, you can bring them to NPC mr.an and trade with him to sell them.

Specially, Huyền Không Gemstones can be used to exchange for items at NPC mr.an.

Other types of gemstones can be used to exchange for items at NPC yumi.