请根据以下文本生成一篇新闻报道。


2021年7月24日，东京奥运会在新冠疫情的背景下正式开幕。预计将有来自200个国家和地区的11000名运动员参加。中国代表团将派出431名运动员参赛，其中包括奥运冠军孙杨和举重名将莫里森。这次奥运会将持续16天，共设置339个小项。
On July 24th, 2021, the Tokyo Olympics officially opened amid the backdrop of the COVID-19 pandemic. It's expected that 11,000 athletes from 200 countries and regions will participate in this event. The Chinese delegation will send 431 athletes to compete, including Olympic champions Sun Yang and weightlifting star Maureen. The Olympics will continue for 16 days and offer a total of 339 events.