Bitan (碧潭), is a tourist spot in Xindian District, New Taipei City, "Bitan" literally means "green lake", referring to where the Xindian River widens to form the lake. There is a well-known suspension bridge that is used only by pedestrians. The bridge can be seen on the crest of Xindian. There are many restaurants, carnival activities, and pedal boats in the area.

STEP1. Find the special brick "碧潭"
STEP2. Find a castle near that brick
STEP3. The number under the castle is "0a 10 xy"
STEP4. Final coordinate is "N24° 57.4ay, E121° 32.2xy"
