《Hehuangewuqinghuanain》Cast

Petrina Fung Bo Bo (born 30 October 1954) is a Hong Kong actress.

Alan Tang Kwong-Wing (20 September 1946 – 29 March 2011) was a Hong Kong film actor, producer and director.

Cheng Kwan Min, Baoan, Guangdong, Hong Kong famous drama actor, announcer and film actor. He studied at Wah Yan College in Hong Kong. In the 1970s, he joined TVB as one of the "Happy Tonight" pillars and once starred in the drama "James Bond." Died in 1995, at the age of seventy-eight.

Lam Tin, the Earth's atmosphere, often appears blue in normal conditions. In the mid-19th century, Ding Erer, an English physicist, believed that the shorter wavelength of blue light is easily rejected by particles suspended in the air and scattered to the four directions. Thus far, the theory is still widely accepted in China's basic education. However, there was a clear loophole in the argument. Later, in the 1880s, Rayleigh found that oxygen and nitrogen in the air itself scattered on the sunlight, while the blue light was easily scattered. The scattering of air molecules could be the main cause of sky blue. In 1910, Einstein's science explained Lam Tin's reason that Lam Tin was formed by scattering of sunlight due to the density fluctuation of air itself.