King Naresuan then marched his army to combat the invader. King Naresuan was full of rage
Phra Wanratana of Wat Pakaew asked him for the death penalty and suggested him to build a Chedi to celebrate the victory instead. King Naresuan the Great then decided to construct a large Chedi in this monastery named Phra Chedi Chaimongkhon. This monastery became "Wat Yai Chaimongkhon" later on.