Mr. Yu’s journey began at the age of 18 when he left his home for Hong Kong. He started working as an apprentice for a Gold Mountain firm, which specialized in trading with Chinese Americans. In 1905, he co-founded the department store True Light Co (真光公司) with friends, including Chinese Christian merchants associated with Sincere. By 1910, they had established a branch in Canton. Mr. Yu’s quest for knowledge took him on an 11-month round-the-world trip in 1920, where he learned about the latest developments in various countries, including Shanghai, Japan, the US, UK, France, Belgium, Holland, Switzerland, Italy, Egypt, and Singapore. Upon his return, he founded Lepack Co Ltd (利百洋行), engaging in import and export trade.