As for whether the balloon would catch on fire when it flew up to the sun, this question inexplicably engulfed half of Lan City. Even Feng Hou specifically came to ask Ren Baqian if it would really catch on fire.
"It won't reach the sun."
"Why not? If it does, will it catch on fire?"
"Yes, it will."
"Why will it catch on fire?"
"The sun is a huge ball of fire—it's like a torch. You asked if it will catch on fire? Why don't you put your finger into a fire and give it a try?"
"Fingers can't catch on fire. Instead, they will get roasted. The sun is a huge ball of fire… So what's the sun burning?"
"What is the sun burning…? Are you filming "100,000 Whys?"[1.100,000 Whys - a Chinese educational show for children] Ren Baqian realized that he would never be able to make it clear to Feng Hou.
"You don't know?" Feng Hou looked at him in disdain.
Admit it if you don't know. Why raise your voice?