China stopped tracking 3I/ATLAS after its Mars flyby but why?

On the Joe Rogan Experience, Harvard physicist Avi Loeb addressed the gaps in data sharing globally, saying:

“Every lost observation narrows our window to understand what 3I/ATLAS really is. Once it passes behind the Sun, we might never see it again.”
Loeb added that China’s early tracking was crucial, but “the global scientific community needs to maintain transparency even amid political or mission priorities.”