The requested vessel with name FANG CHENG and MMSI:0 and IMO:6725248 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
FANG CHENG 1 N/A 413465790 GUANGZHOU Dec 17, 2017 14:15 UTC
FANG CHENG GANG 9571674 477963300 GORONTALO Nov 26, 2017 03:43 UTC

Also, you may try to find the vessel in our comprehensive Vessels Database or track this ship on the map.