Ji Xueyan's Confession in the Asura Arena

He ordered Cao Zhao from the Scarlet Heaven Hall to lead a team and select a group of elites to ride the Kun Peng Ship to the border. They would deliver the Flamespark Pearl and destroy the invading Shang army to recapture Gu Po Town. Coincidentally, Xu Xing was also selected.

The Kun Peng Boat was a flying spiritual object, forged from the true spirit Kun Peng's skeleton and other rare and expensive materials. It was a true treasure of Grand Xia, and was priceless. It could fly, and its speed was much faster than the Divine Heavenly Dragon Horse.

When they arrived at Black Dragon Road, the battle just happened to break out. Cao Zhao couldn't leave, so he took out 10,000 Flame Thunder Beads and put them in a specially made Great Sumeru Bag. He asked him to keep them and immediately rushed to Wangtian County to support the garrison there.

The Great Sumeru Sack was specially made for transportation and logistics. Great Xia had it, and so did the Shang Dynasty.