Is the subway noisy in Guangming Longguang Kowloon Terrace duplex apartment?

1. The air conditioning of Guangming Longguang Jiulongtai duplex apartment is designed on the indoor balcony. Turning on the air conditioner produces air conditioning noise and low-frequency vibration, which is very noisy.

2. Downstairs is the double subway between Line 4 and Line 6, and the high, medium and low frequency noise generated is about 65-70 decibels, which is very noisy.