Walkthrough

1. Accept the quest from your trainer in Job Center and get a Training Badge.

2. Talk to Aunt Zhang and discover that her son Mo Mo is lost. She tells you that Jerk Wang is the last one who saw Mo Mo.

3. Jerk Wang gives you one Magic Firework and asks you to set them off between 20:00-21:00 in these three spots: (397,315), (426,305) and (485,404) in that order. But you find nothing by doing this.

4. Return to Jerk Wang, you are told to find Taoist Shine. He said you should take the Charm to one of the 3 spots, right click to use it and enter the Ghost City between 20:00-21:00.

5. You see Mo Mo in Ghost City (145, 134). But he is not willing to go home. Suddenly, you find a pillar at (162, 217). Click it to get some powder. Bring it to Taoist Shine. He recognizes it and tells you to take the powder with you, use the Charm at one of the 3 spots again and enter the Dark City.

6. In Dark City, you need to kill 100 Kid Catchers and Kid Ripper. Then the Kid Hunter appears. Kill it and the Kid Seizer will appear. Then you kill that too! And you will obtain a Bezoar. Once Mo Mo eats it, you will be sent to Twin City at once.

Note:
A. Before you give the Bezoar to Mo Mo, you can use it on other children. Each child can be fed only once and you will obtain experience worth 1/6 of an Exp Ball.
B. Once Mo Mo eat the Bezoar, he will disappear. He will show up after ten minutes.

7. Go back to Aunt Zhang. She will reward you an Ultra Badge which you can swap it for a reward from your trainer (the one who can promote you) in Job Center.