○In 1968, the founder Huang Daoyi developed a rheumatoid arthritis medicinal oil using a secret recipe handed down from his ancestors, and later opened a medical clinic in Sham Shui Po.

○In 1978, when the medical clinic moved from Nam Cheong Street to Cheung Sha Wan Road, the trademark of Wong Tao Yik Lok Oil was deeply rooted in the hearts of the people.

○In 1988, a family company was established. His son Huang Tianci and his wife Luo Jinmei assisted in managing the family business.

○In 2000, Huang Daoyi accused his son Huang Tianci and his wife, his daughter Huang Huijuan and six other people of infringing the copyright of Huang Daoyi's Huoluo Oil.

○In 2001, Huang Daoyi Huoluo Oil received a new packaging for its 33rd anniversary, with an annual turnover of more than 60 million yuan and a profit of more than 10 million yuan.

○In 2003, Huang Daoyi divorced his wife Luo Jinmei, and part of the company's shares were transferred to his wife.

○In 2005, Huang Daoyi filed a petition to take back the company's shares from his two grandsons, and applied to prohibit them from exercising shareholder resolution rights.

○In 2006, Huang Daoyi accused his three children, daughter-in-law and son-in-law of using Huang Daoyi’s trademark to run a similar medicinal oil business without his consent.