假山上不时还会有工作人员走过，由于近期被多家媒体“盯住”，工作人员警惕性很高，任凭外人怎么敲门里面始终无人应答开门。
A villa privately built on the rooftop of a residential building in downtown Beijing has prompted complaints from neighbours living below. Professor Zhang, the villa owner, has been instructed to tear down the illegal building, according to the property managers.