They never left.
A government task force has called on China to pull out its vessels from the West Philippine Sea after some ships remained anchored at the Julian Felipe Reef while others simply dispersed to nearby reefs located with local waters.
READ MORE: https://mb.com.ph/2021/03/31/ph-calls-for-pullout-of-44-chinese-ships-in-julian-felipe-reef-over-200-dispersed-in-kalayaan-island-group/