@ginfreely
you can buy one of this from taobao and have your "revenge" if nothing works.
caveat is you have to be absolutely sure all these nosies and what not is coming from your direct upstairs neighbours before embarking on this "revenge"
also, the vibration from this device will travel to other units left right upper floors and down too
good luck
https://www.scmp.com/news/china/art...t-dwellers-get-even-noisy-upstairs-neighbours
Annoyed with your noisy neighbours? Chinese retailers have a gadget to help you get even
When one flat dweller couldn’t stop other people’s children from running about, he returned like with like
A gadget that creates vibrations on the ceiling to rein in noisy upstairs neighbours has become a hit among Chinese flat dwellers, according to a local newspaper.
A resident of Beijing, only indentified by his family name Zhang, had been complaining about the noise coming from children who lived on the floor above him and ran around, which often kept Zhang’s parents awake, the
Beijing Morning Post reported.
He called the police for help, who visited the family and asked them to stop, but as soon as they were gone, the noise would soon start again. Exasperated, Zhang bought a vibrating motor, attached it to the ceiling, and turned it on whenever the children started running, the report said.
“The upstairs family came down to talk to us, and they became quiet for a while, but then the conflicts between us grew bigger,” Zhang was quoted as saying.
Taobao.com, China’s consumer-to-consumer platform, offers many noise-dispelling vibrating motors that produce a variety of sounds, with some models selling for hundreds of yuan. One kit, selling for 138 yuan (US$20), includes a motor, a Wi-fi remote, cables and an extendable rod.