Here are several options for a formal English rewrite of the title, ranging from slightly modified to more substantially rephrased:
Option 1 (Direct & Concise):
Chinese AI Chatbots Underperform on Pro-China Misinformation Assessment
Option 2 (Neutral & Objective):
Performance of Chinese AI Chatbots on Pro-China Misinformation Evaluation
Option 3 (Focus on the Result):
Chinese AI Chatbots Fail to Meet Standards in Pro-China Misinformation Test
Option 4 (Analytical Tone):
An Evaluation of Chinese AI Chatbots’ Handling of Pro-China Misinformation
Option 5 (Most Formal/Report-Style):
An Assessment of Chinese AI Chatbots in a Pro-China Misinformation Task
All of these maintain the original meaning while adopting a more formal, professional tone suitable for reports, analyses, or academic contexts. Please let me know if you need any adjustments.