Hot air balloons are seen during a hot air balloon festival in Taitung, southeast China's Taiwan, June 29, 2019. The hot air balloon festival opened Saturday in Taitung County, attracting 24 hot air balloons and over 10,000 visitors. (Photos: Xinhua)

People attend a hot air balloon festival in Taitung, southeast China's Taiwan, June 29, 2019. The hot air balloon festival opened Saturday in Taitung County, attracting 24 hot air balloons and over 10,000 visitors.

Hot air balloons are seen during a hot air balloon festival in Taitung, southeast China's Taiwan, June 29, 2019. The hot air balloon festival opened Saturday in Taitung County, attracting 24 hot air balloons and over 10,000 visitors.

Hot air balloons are seen during a hot air balloon festival in Taitung, southeast China's Taiwan, June 29, 2019. The hot air balloon festival opened Saturday in Taitung County, attracting 24 hot air balloons and over 10,000 visitors.

Hot air balloons are seen during a hot air balloon festival in Taitung, southeast China's Taiwan, June 29, 2019. The hot air balloon festival opened Saturday in Taitung County, attracting 24 hot air balloons and over 10,000 visitors.