```
Suddenly, Chang said, "Watch your head."
Cha Xiaodao's expression shifted as she saw Chang clench his legs together and forcefully pull out a black steam valve.
In an instant, a massive amount of steam poured down from above their heads, filling most of the workshop and engulfing them both.
Chang took a deep breath, looked down at Cha, and said, "Pass me the crude oil pipe. Be careful, it might be hot."
"You mean this thing?"
Cha Xiaodao pointed to the black pipe on top of the spindle-shaped container beside her.
"That's the one, pull it out and give it to me."
Cha Xiaodao pulled the pipe out with one hand and tossed it to Chang, who caught it and, without hesitation, plunged it into the device in front of him.
"Is this thing still burning oil?"
Cha Xiaodao asked casually.