I've already asked you to provide the DriveDx report(s) for the internal drive(s) so I can review it in case it may contain clues. I've also asked you to record the noise to see if I can recognize the noise since some types of noises are very distinctive. Without this information there is absolutely nothing anybody here can do for you. Even with this information it may not help us to identify the problem, but it is the best we can do remotely.
While it is extremely rare for a hard to make a noise without actually dying I have seen one case where the drive would work normally while making an odd noise. In addition the sound could be coming from a fan, a speaker, the optical drive, or it could be some electronic noise from the power supply or Logic Board. We cannot tell since we cannot hear the sound ourselves. Sometimes the only way a repair technician can identify the source of a sound is for a technician to open the computer.
You need to take the computer to an Apple Store or an Apple Authorized Service Provider to be examined. Currently Apple Stores outside of China are closed, but an AASP may be open.
Also make sure to backup your computer regularly just in case it stops working or you accidentally delete something important.
Good luck.