The news that China is cutting rates and injecting a massive liquidity of $138 billion is a significant move. Generally, a rate cut seeks to stimulate credit and investment within the country, making money cheaper to borrow. The liquidity injection reinforces this measure, putting more funds at the disposal of banks and other financial institutions. This could translate into a greater flow of capital into various sectors of the Chinese economy, and potentially, into international markets seeking opportunities.

On the other hand, you mention that the Fed (Federal Reserve of the United States) is buying billions in bonds. This action, known as quantitative easing (QE), also injects liquidity into the U.S. financial system. By purchasing bonds, the Fed increases bank reserves, which theoretically should facilitate credit and reduce long-term interest rates. The arrow you indicate from 📉➡️📈 suggests an expectation that this bond purchase could initially pressure rates downward, but could eventually lead to an increase in asset prices (such as stocks and bonds) due to the greater availability of money.

The conclusion you draw is that "That's trillions in capital about to hit the markets!". And in principle, you are right. The coordinated action of an economic giant like China and the monetary policy of the Fed certainly release a considerable amount of money that will seek profitability in global financial markets.

However, it is crucial to consider some additional factors:

* Destination of capital: Not all of this capital will necessarily flow into the same assets or markets. A portion could remain in domestic markets to boost internal economic activity. Another portion will seek opportunities in emerging markets or developed economies, depending on the risk appetite and growth prospects.

* Impact on inflation: A massive liquidity injection, if not managed carefully, could generate inflationary pressures in the medium and long term. Increased aggregate demand, driven by greater access to credit and investment, could exceed supply capacity, leading to widespread price increases.

* Associated risks: There are always risks in financial markets. An excess of liquidity could inflate asset bubbles, where prices become disconnected from their underlying economic fundamentals, potentially leading to sharp corrections in the future.

* Global context: It is important to analyze these measures in the context of the global economic situation. Factors such as persistent inflation in many regions, geopolitical tensions, and challenges in supply chains could influence how this capital is deployed and what impact it has.

In summary, the news of liquidity injection both in China and the United States certainly has the potential to energize financial markets. However, it is essential to closely observe how this situation develops and what the side effects are on the global economy. Let's stay alert to market movements!