San Francisco is an important cultural center in Northern California and the Bay Area, featuring a Mediterranean climate, with the renowned Golden Gate Bridge and Fisherman's Wharf. Winters are warm, summers are cool, and the area receives abundant sunshine. It is close to Yosemite National Park and California's wine country, Napa Valley, honored as the most favored city by Americans.
The Spanish discovered this place in 1769, and by the mid-19th century, the Chinese gold rush was booming, leading to the area's nickname 'Jinshan'. To differentiate it from Melbourne, Australia's 'New Jinshan', it was renamed San Francisco.
Currently, San Francisco has a population of about 880,000, with 180,000 being of Chinese descent, making it one of the areas with the highest density of Chinese people in the Western Hemisphere, second only to New York.
Sun Yan's grandfather came to North America by ship from the Mainland during the San Francisco gold rush.