Aerial photo taken on April 15, 2018 shows a kickoff ceremony for tourism season held in Gongbo’gyamda county, Southwest China’s Tibet autonomous region. [Photo/Xinhua]

People taste air-dry pork during a kickoff ceremony for tourism season in Gongbo’gyamda county, Southwest China’s Tibet autonomous region, April 15, 2018. [Photo/Xinhua]

A man shows handmade wooden bowls during a kickoff ceremony for tourism season in Gongbo’gyamda county, Southwest China’s Tibet autonomous region, April 15, 2018. [Photo/Xinhua]

People watch folk art performance during a kickoff ceremony for tourism season in Gongbo’gyamda county, Southwest China’s Tibet autonomous region, April 15, 2018. [Photo/Xinhua]