The answer depends on what Mr. Trump’s primary objective is. If it’s to sound tough to American voters, he may well have a winning formula. But if it’s to bring about a substantive change in China’s negotiating posture toward a bilateral trade agreement, one that might usher in changes in China’s trade policy, addressing questions of forced technology transfers, intellectual property theft, industrial subsidies, currency manipulation and a phalanx of other non-tariff barriers, I’m not so sure.

Days after the president’s tweets, China listed three “red lines,” positions the United States had taken in the trade talks that were unacceptable: First, that it would keep tariffs in place for a period after the proposed trade agreement was signed. Second, that it could impose punitive tariffs if it judged China to be in violation of the agreement, and that China would be forbidden from retaliating with its own tariffs. Third, the ever-inflating expectations of the terms under which Beijing would buy American goods under a proposed bilateral purchasing agreement.

These “ red lines ” were new. Before that, China’s negotiating team had a fully flexible remit from the leadership. But not anymore. Now that these three lines are in the public domain, there is no way Chinese leaders can yield on them. The leaks of large parts of the negotiating text to the American news media has added a new level of toxicity, making it virtually impossible to return to the existing text as a basis of negotiations. Together with recent moves against the Chinese telecom company Huawei presumably intended to pressure Beijing further, the possibility of negotiating a revised agreement that is more accommodating to American interests is now very slim.

Instead, what I have seen in Beijing over the last few weeks is a country moving in exactly the opposite direction.