Is the Xu Mozhai Feng Shui Instrument on Sina credible?

Companies that can advertise on Sina are definitely not small companies. Companies that can advertise on Sina are definitely strong, and the recommended products are not bad. I think his feng shui instrument is more accurate than watching feng shui, at least it is not a quack trick. The instrument looks good at feng shui, but not good at it. More objective and credible.