Danny Summer (December 8, 1952-), formerly known as Wu Zhikun, is a Hong Kong male singer and actor, known as the "father of Hong Kong rock music". In 1979, he released his first album "Childhood", which won the Best Newcomer Award in the Top Ten Singers and Best Newcomer Awards of the Overseas Chinese Daily. He sang many popular songs with his unique hoarse voice, such as "Never Give Up", "Intersection" and "Station" in cooperation with Su Rui. After Xia Shaosheng covered other people's songs in 1998 and released the album "Zhu", he was popular with audiophiles in the audio industry. In the following years, he also released a CD and covered other people's songs under the name "Zhu". It was not until the sales of the fifth episode of "Zhu" fell in 2015 and the reputation was poor.