Congresswoman Michelle Steel, R-Calif., has stood firmly in support of Taiwan after China carried out significant military operations in the region after U.S. House Speaker Kevin McCarthy's visit with the nation's president.

China's Maritime Safety Administration recently cautioned seafarers against entering the waters near Shandong province, which is an area commonly used for military exercises, FOX News reported. The warning came ahead of a significant military operation China conducted in the Yellow Sea, details of which were not disclosed. These exercises followed China's recent military maneuvers around Taiwan, which Beijing claimed were meant to be a warning. 

"China’s threats and intimidations against Congress will not work," Steel wrote in a April 23 post on Twitter. "We stand behind Taiwan and its sovereignty."

The Chinese military previously conducted a three-day exercise called Joint Sword back in early April, after McCarthy met with Taiwanese President Tsai Ing-wen. According to FOX News, China had warned the meeting would result in severe consequences.

Meanwhile, for the first time in two years China and Singapore will conduct its first joint military exercise, which could be a sign that Beijing is trying to strengthen its defense and security with Southeast Asian nations. The Business Standard reported this exercise was scheduled to take place at the end of April. 

China stepped up its military pressure on Taiwan the last few years, and frequently sends fighter jets and Navy vessels towards the island. Last summer, China sent more military ships over the informal boundary known as the Taiwan Strait after then-speaker Nancy Pelosi visited Taiwan, FOX News reported. 

According to The Business Standard, the move not only heightened tensions in the area, but China's growing military involvement in Southeast Asia also serves as a challenge to the U.S. influence in the region, particularly in countries such as Singapore and Indonesia.