With the decision to rejoin the anti-climate change efforts, the US and China now competes world leaders to prevent environmental disasters.

President Joe Biden on April 21 presided over the two-day online summit, with the participation of 40 world leaders, including Chinese president of the NEW, who has just three days before the US criticism

China and the United States are the two most carbon emissions in the world.

At the summit this week, Biden announced its ambitious target, when committed to cutting 50-52% of greenhouse gas emissions by 2030, doubling the target of 26-28% year

The President of the Wijack also sets its own ambitions.

A former Chinese State Bank Advisor this week estimates Beijing will need to spend $ 15 trillion in the next 30 years to achieve the carbon neutralization goal by 2060.

Becoming a provider choosing to the transition is what both Washington and Beijing keep an eye on.

China has publicly been publicized in green technology.

Washington is also "no less edge" when efforts to increase US spending.

US President Joe Biden (left) and Chinese President Xi Binh.

However, Li Shuo, a senior adviser in the Greenpeace environment in Beijing, said it was difficult to compare the cuts of different countries, because the cutting reference landmark was different.

"The most important thing is not how big it is on paper, but how much it is realized," Li said.

But in the speech at the conference, the President stressed that China's climate target is a great commitment to overcome all rich and rich partners.

"China is committed to moving from the peak of emissions to neutralization to carbon for a longer time that many developed countries can do and this requires extraordinary efforts from China," he practiced said

And when implementing a commitment, China's political system means they are not affected by the election cycles like the United States.

The conference chaired by the United States was the first online meeting between President and President Biden since the White House boss took office at the end of January. Before the event, John Kerry, the presidential agent

Although the handshake between the US and China is essential in the fight against climate change, many people expressing concerns this cooperation can be difficult to escape "the shadow" in the relationship between the two countries

After four years under Trump, the US-China bilateral relations fell to the lowest level since establishing relations in January 1979.

President Biden so far has no signs of changing directions in Chinese policy.

"This may be a preview of what will happen in the coming years," said Vincent Ni, Guardian analyst, said.

When he gathered at the climate summit, the Global Times of the Chinese State criticized the dynamics of the US bisex when promoting bills against China in many areas, including human rights, edge

"A move self-contradictory with hostile attitude on cooperation ideology can affect US-China cooperation prospects," articles with paragraphs.

However, Nectar liver and James Griffiths, two editors of CNN, said that if compared to other fierce competition areas such as technology, trade, geopolitics or defense, climate change can

Washington and Beijing see climate change as the field where the two sides have the same benefits.

"This may be a good start in a very long journey to improve relationships. Conference will help stabilize this relationship so that it is not bad, but there are many other systematic problems between

Wang Yiwei, professor of international relations at the Chinese People's University in Beijing, believes that Biden will resolve conflicts through diplomacy.

"There are many factors affecting Biden, which has pressure from Trump supporters. The most important thing for both sides is unified should not face directly or war," Wang said.