I find it interesting that it is only the Chinese supposedly finding objects and that one of their ships had got a ping.
Per the press conference, a western ship (Ocean Shield) picked up an acoustic signal about 90 minutes ago and is slowly turning around (with 6km of cable trailing) to try to sort it out. No more details.
It is not in the same area (I think 300 mi apart).
These were just characterized as "fleeting acoustic events."
There is also aircraft sighted debris somewhere in the search area that ships are being dispatched to investigate.