A gas tank can be a heavy thing, even if it is only for cooking at home.  Made of metal and such, a full tank can easily weigh up to 5 kilo. That is heavy for a woman, or two. Having a kind around with a bicycle can then be very handy! Kid don’t know anyway, kids are stupid, and the women don’t need to bend their household-broken backs any further. Smart work in China. Via: V7me.