Beijing on Saturday continued a series of military drills around Taiwan aimed at practising a blockade and ultimate invasion of the island, analysts say.
Taipei observed several Chinese planes and ships operating in the Taiwan Strait, believing that they were simulating an attack on Taiwan's main island.
The defence ministry said in a statement that there were several batches of Communist planes and ships conducting activities around the Taiwan Strait, some of which crossed the median line that runs down the Taiwan Strait, which Beijing does not recognise.
In a bid to show how close China's forces have been getting to Taiwan's shores, Beijing's military overnight released a video of an air force pilot filming the island's coastline and mountains from his cockpit.
From Saturday to August 15th, Beijing also said they would hold a live-fire drill in a southern part of the Yellow Sea - between China and the Korean Peninsula.
China's state broadcaster, CCTV, reported that Chinese missiles have flown directly over Taiwan during the exercises - a major escalation if confirmed.
The White House summoned Chinese ambassador to Washington on Friday to rebuke Beijing over Beijing's actions, and Taipei has remained defiant, insisting that it would not be cowed by its evil neighbour.
Beijing has been worried about the future of the planet because of the decision to withdraw from hard-won cooperation on climate change.
Alden Meyer, a senior associate at E 3 G, told AFP that it's obviously worrying and raises concerns.
He said that it is impossible to address the climate emergency if the world's number one and number two economies and number one and number two emitters are not taking action.
It's always preferable that they do that in a collaborative way. National Security Council spokesman John Kirby told reporters in Washington that the decision was fundamentally irresponsible because the climate crisis doesn't recognise geographic boundaries and borders.
The world's largest emitter is refusing to engage in the necessary steps necessary to combat the climate crisis. UN Secretary-General Antonio Guterres warned the two superpowers that they must work together for the sake of the world.
Without an effective dialogue and cooperation between the two countries, there is no way to solve the most pressing problems of the world, said Stephane Dujarric, spokesman for the secretary-general.
Experts told AFP that the latest downturn in relations between the two superpowers could be deep and long-lasting, as tensions over Taiwan have risen to their highest level in nearly 30 years with an elevated risk of military conflict.
Bonnie Glaser, a China expert at the German Marshall Fund, said the relationship is in a very bad place right now.
She said that the suspension of bilateral military and maritime dialogue while China continues its military exercises was particularly worrisome.
She said that they don't know what else they will do. We don't know if this is just a temporary thing. John Culver, a former CIA Asia analyst, said in a discussion hosted by the Center for Strategic and International Studies that Beijing's main purpose with its military exercises was to change that status quo.
Culver said that this is the new normal.
The Chinese want to show that a line has been crossed by the speaker's visit.