Chapter 270: 144: Something seems a bit off with the Crown Prince_3

Only by blocking the exit of the canyon could they cooperate with the reinforcements to ambush the enemy.

Once the caravan entered the canyon, their speed increased significantly. Seeing they were nearing the boulder, their breathing slowed down subconsciously.

At this moment, there was a "boom" and a spark burst into the dark night sky, illuminating half of it. Then followed by a huge "rumble" sound, the boulder rolled down from the mountain top, crushing numerous rocks like meteor showers towards the Tartar army.

The horses pulling the carts panicked and ran around, with the boulder blocking the canyon tightly and countless broken stones tumbling down. The Tartar Cavalry's warhorses were instantly thrown into chaos, while men shouted and horses neighed, throwing the entire canyon into disarray.

It was at this time that Su Xinyi and others noticed that the rear of the grain transport team had also started to panic, and all their eyes brightened. The reinforcements are here!