Washington, D.C., on August 18, Xinhua News Agency reported that when he was a child, he struggled with stuttering, then lost his wife and children due to traffic accidents and illness. He has been in politics for nearly 50 years and has run for president of the United States three times Joe Biden, the former vice president of the United States, who is about to reach the age of 78, was officially nominated as the presidential candidate for 2020 at the National Congress. In the first two challenges, he stopped in the inner-party competition; this time, can he win? Biden was born in November 1942 in a middle-class family in Pennsylvania, the United States. When he was a teenager, he moved to Delaware with his family. He studied at the University of Delaware and Syracuse University and obtained a law degree. Biden once wrote in his autobiography that when he was a child, his elders often discussed international and domestic politics, and he couldn’t wait to participate in it, which foreshadowed his political career. After graduating from Syracuse University in 1968, Biden worked as a lawyer and was active in Delaware politics. In 1972, he was elected to Delaware, becoming one of the youngest senators in the history of the United States. During his 36 year career as a U.S. senator, Biden served as the chairman of the Senate Judicial Committee for a long time and served as the chairman of the Senate Foreign Affairs Committee twice. He ran for president twice in 1988 and 2008, but he was not nominated by the party. In the 2008 general election, Biden withdrew from the party competition and became the running mate of the later President-elect Obama, and eventually became the vice president of the United States, and was re elected four years later. Biden has not only established a deep foundation and extensive contacts, but also accumulated enough domestic and foreign experience due to his long-term political experience. There have been many setbacks in Biden’s life. As a child, he was ridiculed by his classmates for stuttering. Finally, he overcame the language barrier by reciting long poems in the mirror. A few weeks after he was elected to the Senate for the first time, his wife and daughter were killed in a car accident and their two sons were seriously injured. He finally decided to take office in the Senate after being persuaded by colleagues and friends. In 2015, his son, Bo Biden, died of brain cancer, and he was hit hard again. Camara Harris, Biden’s running mate, was a close friend of Bo, and this relationship was one of the reasons why he finally chose Harris. < p > < p > the National Congress of the Communist Party of China (NPC) adopted the new party platform on the 18th, which covers the new epidemic situation, economy, medical insurance, race, diplomacy and other fields. It is generally “moderate” and absorbs some of the views of the “progressives” in the party. This reflects Biden’s policy objectives. < p > < p > the new crown epidemic and ethnic issues are important issues in this year’s general election. In view of the new epidemic situation, the new party program proposed to expand the scope of detection, strengthen contact tracking, and provide free testing, treatment and vaccine. Biden, who usually wears masks during the outbreak, also called for a nationwide mandatory mask wearing order. On the issue of race, Biden promised to solve the “systemic racism” problem in American society within 100 days after taking office. He also made racial issues a part of his economic recovery plan and promised to increase investment in education, employment, income, housing, and support for small businesses to ensure equal opportunities for ethnic minorities. However, some American media have pointed out that Biden has refused to “turn left” in the past few decades, but now, for the sake of “unity”, he has absorbed the “progressive” ideas. The current policy must be bolder than that when he was a senator and vice president. “This is a contradiction in itself”. There may be a gap between his election commitment and actual implementation. Since the presidential nomination was locked in April, Biden has been ahead of President trump, who is seeking re-election, in the nationwide and key swing states. According to a Pew Research Center poll in June, voters believe Biden is more peaceful, more honest, more concerned about the needs of ordinary people and a better role model than trump. In terms of policy issues, Biden’s recognition of economic policy is lower than Trump’s, and Biden is more optimistic in judicial, foreign policy, epidemic response, ethnic issues, national unity and so on. However, it is worth noting that more than half of Biden supporters support Biden because they are against trump, which is much higher than other options such as leadership, personality, policy stance and so on. Despite the lead in the polls, Biden is not without a short board. First of all, it is about age. If Biden wins, he will be the oldest president of the United States when he is first elected. Opinion polls show that about a third of Biden supporters are worried about their old age and health. Second, Biden’s current policy stance shows more signs of “turning left” than in the pre election stage, which the trump campaign team is using to portray him as a “tool of the radical left”. < / P > < p > again, Biden’s ability to mobilize voters’ enthusiasm lags behind Trump’s, despite his “solidarity card.”. Affected by the epidemic, Biden is difficult to hold large-scale rallies and build momentum. The current audience rating of this year’s National Congress, which is mainly in the form of live broadcast, is not as high as it was four years ago, which may make it more difficult to make up for this short board.