BEIJING/NEW YORK -- In April, the Chinese aircraft carrier Liaoning passed between two Japanese islands, Okinawa's main island and Miyakojima, in the East China Sea with a full fleet.
This marked the carrier group's first time sailing to and from the Pacific Ocean via the passage and was seen as yet another sign of China's stepped-up military activity in neighboring seas.
In addition to increased activity near the Japanese-administered Senkaku Islands, which China claims as the Diaoyu, Beijing is revising a law to enlist People's Armed Police Force personnel -- who number 700,000 to 800,000 -- in handling maritime disputes with foreign ships.
The moves each point to Beijing's ambitions to assert a stronger presence in the post-coronavirus world order.
This all comes when the U.S. Navy has recently experienced a rare power vacuum in the West Pacific and the South China Sea. Its closest two aircraft carriers were limited in their actions. The USS Ronald Reagan, forward-deployed to Yokosuka, Japan, just underwent months of annual maintenance but has been unable to assemble its full crew, owing to infections. The USS Theodore Roosevelt, which experienced a more serious outbreak after stopping in Vietnam, had to quickly move from the South China Sea to Guam for quarantine.
"There is concern that while countries are busy occupied with pandemic response, at a time of no U.S. aircraft carriers operational in the Pacific, China has moved its carrier from the East China Sea to the Pacific and then on to the South China Sea," said Tetsuo Kotani, professor of international relations at Japan's Meikai University.
"If infections spread within the U.S. military and the defense industry becomes unable to provide sufficient maintenance, China may consider it a power vacuum and move to alter the status quo in the Senkaku Islands and Spratly Islands and even with Taiwan," Kotani said.
In late April, the National People's Congress Standing Committee discussed a legal change allowing the military-controlled People's Armed Police Force to help resolve disputes with foreign fishing vessels and other maritime incidents currently handled by the China Coast Guard.
Armed Police members with special permits will be sent out to sea. The planned change will allow greater integration of the Armed Police and the Coast Guard, which was placed under the command of the People's Liberation Army in 2018.
The revision, the first in 11 years, could pass within the next few months.
China views the South China Sea as an important sea lane for energy imports from the Middle East. Increased military involvement in the waters could lead to scuffles with neighbors like Vietnam and Philippines, with which it has competing maritime claims.
Chinese government vessels have entered Japanese territorial waters near the Senkaku Islands for three consecutive days through Sunday, the longest streak since August 2016. On Friday, four Chinese government vessels entered the waters, two of which approached and chased a Japanese fishing boat -- spurring the Japan Coast Guard to send patrol vessels to the area.
The fishing boat was "illegally operating in China's territorial sea," Chinese Foreign Ministry spokesperson Zhao Lijian told reporters Monday. The Chinese side asks Japan to "avoid triggering more incidents" involving the islands, he said.
Chinese military aircraft have also conducted drills near Taiwanese waters on Friday.
With the National People's Congress kicking off its delayed annual session May 22, President Xi Jinping is eager to show that China has beat the coronavirus ahead of the rest of the world. Beijing could also bolster its presence in the East and South China seas while the U.S. is focused on containing the outbreak within its own borders.
America has raised alarm over the recent developments. "The Chinese Communist Party must end its pattern of bullying Southeast Asians out of offshore oil, gas and fisheries," said Adm. John Aquilino, commander of the U.S. Pacific Fleet, in a news release Thursday. The fleet deployed a combat ship and a cargo ship to the South China Sea that day.
The U.S. military also conducted a rare two-day freedom-of-navigation operation in the South China Sea at the end of April.
"Our forces fly, sail and operate in the international waters of the South China Sea at our discretion and in accordance with maritime norms and international law," Rear Adm. Fred Kacher said in Thursday's release.
But the absence of aircraft carriers creates a gaping hole in the Navy's strategy.
"Ships have certain vulnerabilities, as we've seen, to this virus. So you start having ships that are more or less out of action because the crews are out of action," said Ian Williams, fellow in the International Security Program at the Washington-based Center for Strategic and International Studies.
"Then you would want to rely more heavily on land-based forces, where you can probably do better social distancing."
Additional reporting by Tstuyoshi Nagasawa in Washington and Ken Moriyasu in New York.