China's actions may be hurting the US dollar in several ways, including:

1. Currency manipulation: China has been accused of keeping its currency, the yuan (or renminbi), undervalued in order to make Chinese exports cheaper and more attractive in foreign markets, including the US. This can reduce demand for US dollars, which are used in international trade and exchange.

2. Trade imbalance: China exports more goods to the US than it imports, leading to a trade deficit. This means that Chinese exporters receive more US dollars than they need to pay for US imports, creating an excess supply of US dollars in China and reducing their value.

3. US-China trade war: The trade tensions between the two countries have resulted in tariffs and other trade barriers being imposed on each other's exports. This can reduce demand for US dollars in China, as well as reduce China's demand for US goods and services.

4. De-dollarization: China has been promoting the use of its own currency, the yuan, in international trade and investment. This can reduce demand for US dollars and weaken the dollar's status as the dominant global reserve currency.

5. Geopolitical tensions: China's rising power and influence, combined with its disputes with the US over issues such as human rights, territorial claims, and cybersecurity, can create uncertainty and undermine confidence in the US dollar as a stable and reliable currency.