Lu Cheng

we know……

Science & technology is a

Also……

Fortunately……

“初见煤端时，毒气灼人，有将巨

竹凿去中节，尖锐其末，插人炭

中，其毒烟从竹中透上”；采煤时，

“其上支板，以防压崩耳。凡煤炭取

空而后，以土填实其井”

Song Ying-xing（ Ming Dynasty ）

（in Chinese）

in front of buildings of the Forbidden CityCapture rainwater to prepare to extinguish fire

But

We still faced with severe

All of us

should learn, study and make it

So