Hou Yi's Bow is a simple ranged weapon. Though seemingly a not very useful item, it is one of the two items needed to reach the Cosmic Ocean.
Function
Hou Yi's Bow is always found in the lower levels of the Moon Challenge, encased by walls of stone brick. It automatically comes with a Steel Arrow.
Despite what a player might think, Hou Yi's Bow functions identically to a Crossbow, firing Arrows in a straight line and pinning them to walls.

Entering the Cosmic Ocean using the bow and the Arrow Of Light to shoot Hundun's eye.
The true function of Hou Yi's Bow is to hold the Arrow of Light. Unlike a Crossbow, it can fire the Arrow Of Light normally without breaking. Due to this, the player can use it to fire it into the opened eye of Hundun, opening the way to the Cosmic Ocean.
Strategy
- Though bringing the bow all the way to Hundun's Hideaway deep within the Sunken City, all the way from either Jungle or Volcana appears to be an incredibly daunting task, one can leave the bow behind with Waddler in Olmec's Lair, and retrieve the bow from him in 7-1, making taking the bow there a much easier task.
- Players should be incredibly cautious as they carry the bow through levels, as in Volcana it may end up in lava or in the Sunken City it may get destroyed within regenerating blocks.
- If the player obtains the bow before reaching Vlad's Castle, they may use the included Steel Arrow to instantly kill Vlad and other Vampires.