Shaking buildings were shi caihang resonance

recently, in a district of Shanghai, community residents often felt the building shake, and almost felt more strongly, duration is long, many residents appeared dizziness phenomenon of discomfort. What causes buildings shook, the residents more than a year, nearly concerned residents found that may be associated and near a stone processing plants.
according to residents, shaking at the time of last year there have been several times, but time is short, a lot of people thought it was paranormal, a concerned resident after several months of continuous observation, found at the time of building vibration, a nearby shi caihang is always flashing lights, that is stone factory is homework, once close, such as vibration is lost, that is likely to be related to the shi caihang.
after inspection agency, concluded that the vibration is caused and shi caihang resonance, but it will not cause damage to houses, let people don't have to worry too much, diplomatic relations between the environmental protection department and the department, and other departments are currently and residents and stone enterprises to negotiate to solve.