U.S. Secretary of State Antony Blinken arrived in Shanghai on Wednesday with U.S.-China ties on a steadier footing, but with a daunting array of unresolved issues threatening the stability of relations between the global rivals.

U.S. Secretary of State Antony Blinken has begun a critical trip to China armed with a strengthened diplomatic hand following Senate approval of a foreign aid package that will provide billions of dollars in assistance to Ukraine,

Even as Mr. Blinken’s plane approached Shanghai, the challenges ahead were apparent. He was set to land just hours after the U.S. Senate passed a bill, which President Biden is expected to quickly sign into law, that provides $8 billion to Taiwan and the Indo-Pacific region, and could also lead to a nationwide ban on the Chinese-owned app TikTok.