Yellow trumpet flowers are in bloom in south China's Guangzhou City. Scientifically known as Tabebuia chrysantha, the flowers become a common sight by April each year. The plant has a 10-day flowering period. Guangzhou is China's largest flower producer, hence its nickname as the "City of Flowers." It has over 100 themed attractions, and tens of thousands of tourists visit Guangzhou every year to look at the beautiful flowers.