Secretary of State Antony J. Blinken cheered on the sidelines at a basketball sport in Shanghai on Wednesday evening, and spent Thursday chatting with college students at New York College’s Shanghai campus and assembly American enterprise homeowners. All of it went to emphasise the sort of financial, academic and cultural ties that america is pointedly holding up as useful for each international locations.

However hanging over these pleasantries throughout his go to to China this week are a number of steps the U.S. is taking to sever financial ties in areas the place the Biden administration says they threaten American pursuits. And people would be the focus of larger consideration from Chinese language officers, as nicely.

Even because the Biden administration tries to stabilize the connection with China, it’s advancing a number of financial measures that might curb China’s entry to the U.S. economic system and expertise. It’s poised to lift tariffs on Chinese language metal, photo voltaic panels and different essential merchandise to attempt to shield American factories from low-cost imports. It’s weighing additional restrictions on China’s entry to superior semiconductors to attempt to maintain Beijing from growing subtle synthetic intelligence that may very well be used on the battlefield.

This week, Congress additionally handed laws that might power ByteDance, the Chinese language proprietor of TikTok, to promote its stake within the app inside 9 to 12 months or go away america altogether. The president signed it on Wednesday, although the measure is prone to be challenged in courtroom.

Mr. Blinken’s go to, which was anticipated to take him to Beijing on Friday for high-level authorities conferences, had a way more cordial tone than on the journey he made to China final yr. That journey was the primary after a Chinese language spy balloon traveled throughout america, tipping the American public into an uproar.

In a gathering with the Shanghai Communist Social gathering secretary Thursday morning, Mr. Blinken mentioned direct engagement between the U.S. and China was each invaluable and crucial.

“We now have an obligation for our individuals — certainly an obligation to the world — to handle the connection between our two international locations responsibly,” he mentioned.

Talking to college students on the N.Y.U.’s Shanghai campus later that morning, he mentioned the tutorial exchanges the scholars had been engaged in supplied a “ballast” for an advanced and confrontational relationship.

Since President Biden met with the Chinese language chief, Xi Jinping, in California in November, the U.S.-China relationship has appeared extra steady, with nothing just like the dramatic ups and downs of the commerce spats underneath former President Donald J. Trump.

However the Biden administration has nonetheless been marching towards a extra restrictive financial relationship with China.

That features controls on semiconductor expertise, that are being raised by each side as a extra outstanding problem than ever earlier than. The Biden administration has been weighing additional export controls, notably on factories which have been serving to produce superior semiconductors for the Chinese language tech big Huawei.

“By explicitly making an attempt to degrade Chinese language tech capabilities, particularly on superior AI, america has moved export controls to the forefront of the U.S.-China agenda,” mentioned Emily Benson, a commerce professional on the Middle for Strategic and Worldwide Research, a Washington assume tank.

In a name between Mr. Biden and Mr. Xi earlier this month, each leaders raised the expertise controls as issues of central significance.

Mr. Biden emphasised that america would proceed to take crucial actions to stop superior American applied sciences from getting used to undermine its personal nationwide safety, with out unduly limiting commerce and funding, in response to the White Home.

Mr. Xi mentioned that placing new sanctions on China was not “de-risking,” however creating dangers. If america was bent on “containing China’s hi-tech growth and depriving China of its official proper to growth, China is just not going to sit down again and watch,” he mentioned, according to the official Xinhua Information Company.

U.S. officers say their restrictions are crucial given China’s authoritarian authorities and statist financial mannequin. However the strikes have rankled Chinese language leaders and pushed tensions over financial measures to their highest level in years.

The measures are usually not simply emanating from the U.S. authorities: Susan Shirk, the writer of “Overreach: How China Derailed Its Peaceable Rise,” mentioned that China had pivoted towards a extra self-sufficient industrial coverage, and has been searching for to supplant america as a high-tech superpower underneath Mr. Xi.

“Xi brazenly acknowledges that whereas he desires China to be much less depending on different international locations, he desires to maintain different international locations depending on China ‘as a robust countermeasure and deterrent’ as he put it, ‘towards them reducing off provide,’” Ms. Shirk mentioned.

China, too, has allowed safety considerations to have an effect on a larger proportion of its economic system, at the same time as Mr. Xi and different Chinese language leaders have tried to reassure international companies that their funding is welcome. A brand new nationwide safety regulation has prolonged Beijing’s attain into Hong Kong, threatening town’s standing as a monetary hub. American executives have been alarmed by China’s investigations of international corporations, in addition to the nation’s broader guidelines towards sharing knowledge and data with foreigners.

Regardless of China’s complaints concerning the U.S. authorities’s efforts to crack down on TikTok, China itself has for many years banned different Western social media companies. Apple mentioned final week that Beijing had ordered it to take away WhatsApp and Threads from app shops in China.

Mr. Blinken and different U.S. officers have emphasised that American export controls, sanctions and different restrictions being imposed on Chinese language tech corporations apply to solely a small fraction of the broader U.S.-China relationship. Elsewhere, commerce is inspired, they are saying.

In a report this week, the U.S.-China Enterprise Council, a gaggle of 270 American corporations that do enterprise in China, estimated that U.S. exports to China supported greater than 900,000 American jobs in 2022, although items exports fell in 2023 on account of China’s lackluster economic system, U.S. tariffs and different elements.

“It can be crucial for us to remind U.S. lawmakers and people in influential positions that each state and congressional district within the U.S. maintains its personal financial and commerce relationship with China, and adjustments in U.S.-China commerce coverage needs to be thought-about very rigorously,” mentioned Craig Allen, the group’s president.