Under the cover of night, the majestic Great Wall loomed like a slumbering giant serpent. Soldiers stood atop the walls, lighting fires to keep warm, oblivious to the massive object hanging over their heads.
Hei San and Hei Shun looked down in surprise and excitement, both eager to try their hand.
"Master, let us give it a try!"
Qi Yue smiled slightly.
"Not scared anymore?"
"Not scared anymore. This beats riding horses or walking by a hundred times, no, a thousand times," said Hei San, taking the lead.
Hei Shun shot him a look.
"How can you compare riding horses or walking to the master's hot air balloon? It's only been a short while and we've already reached the frontier without being detected."
Hei San was somewhat unconvinced.
"So I said it, a thousand times stronger!"
Hei Shun's attitude remained firm.
"That's not right; you haven't fully recognized the powerful utility of the hot air balloon."
Hei San was so stumped that he couldn't speak.