Li Yuan

Having gotten into trouble for making jokes critical of the Chinese government, the standup comic Chizi now lives in self-imposed exile. He’s finding that freedom imposes its own constraints.

For decades, many Chinese viewed the United States with a mix of admiration, envy and resentment. President Trump’s volatile second term shattered that image.

On Threads and other sites, liberal-minded Chinese accounts were mocking the proceedings and offering a rare window into opinions on Mr. Xi and his leadership style.

Former police officer Zhang Yabo described Xinjiang as a giant prison that imprisoned not only countless innocent Uyghurs “but also the souls of those ordered to enforce it.”

Young researchers have long come to the U.S. for academic training, but a combination of Chinese money and U.S. restrictions is shifting the balance.

The ability to retain information over tens of seconds is essential for carrying out many routine tasks. Recurrently connected circuits are thought to support memory over these timescales, yet how they maintain and represent remembered information remains unclear. We asked whether the medial entorhinal cortex (mEC), where recurrent attractor dynamics generate grid-cell firing patterns and single toroidal attractor manifolds in two-dimensional environments, also supports low-dimensional neural activity patterns during memory retention. During a working-memory task, delay-period mEC dynamics did not show key features of grid firing in simple environments. Instead, broader mEC populations, not limited to grid cells, expressed multiple sequences and recurring activity patterns. Periodically repeating delay-period sequences retained task-relevant information, including past locations and future turn directions. These findings suggest that the mEC network generates low-dimensional dynamics more broadly, with grid-cell activity representing one manifestation and more complex manifold topologies supporting task-related representations during working memory. ### Competing Interest Statement The authors have declared no competing interest. National Institute of Neurological Disorders and Stroke, https://ror.org/01s5ya894, NS086947, NS102915, NS121231 U.S. National Science Foundation, 2024776 National Institute of Mental Health, MH119179

As Xi Jinping arrives in the United States this week for a state visit, China’s advances in artificial intelligence will be in the air. Less discussed: China’s economy in its worst shape in decades.

As Xi Jinping arrives in the US this week for a state visit, China's advances in artificial intelligence will be in the air. Less discussed: China's economy in its worst shape in decades.

China’s economy is in its worst shape in decades and Xi Jinping is facing criticism for what he is focusing on.

(The New New World)