His housemate suffered a collapsed lung from his attack.
Visitors must apply for tickets in advance.
Many speculated that the 2nd accident happened as motorists were being kaypoh.
Xu said he plans to appeal against the conviction.
He claimed he had evidence of him trespassing into the condo and entering a toilet with a woman.
The boy slipped out of his house while his parents were absent and his grandmother asleep.
He also pleaded guilty to rioting on 2 occasions.
It had apparently started with a protest.
A tray of 30 eggs will cost S$6.50 instead of S$7.50.
SAF has also introduced new measures for recycling food waste.