Chan Tan Ching-fen is a Hong Kong billionaire heiress whose immense wealth stems from her family's long-standing connection to the global shipping and transportation industry, specifically the Orient Overseas (International) Limited (OOIL) conglomerate. Her wealth is secured through her relationship to the founding family.

She is the sister-in-law of Tung Chee-hwa, the former Chief Executive of the Hong Kong Special Administrative Region (1997–2005), and the daughter-in-law of C.Y. Tung, who founded Orient Overseas. Her career and life have been defined by the generational stewardship of the family's assets in this crucial global industry, which was built on container, dry bulk, and tanker operations.

Chan Tan Ching-fen's career is defined by her role as a key family shareholder and decision-maker within the financial and business structures that control the wealth derived from Orient Overseas (International) Limited (OOIL). The Tung family's shipping empire, one of the world's largest, faced a major slump during the 1980s global recession but survived through successful financial restructuring, a pivotal moment that secured the family's long-term control.

The family's wealth has been managed through private holdings and investments tied to the performance of OOIL, which has since been acquired by COSCO Shipping Holdings (the mainland Chinese state-owned shipping giant). This major acquisition of OOIL generated immense capital for the Tung and Chan families, which is now managed through diversified investment portfolios, maintaining the family's status as a major financial force in Hong Kong.

Chan Tan Ching-fen's social impact is structural, stemming from the economic stability and global trade facilitated by OOIL's operations. The family's foundations are active in supporting education, culture, and community welfare in Hong Kong, reflecting a commitment to the civic fabric of the city.

The family's prominence, especially through the political role of her brother-in-law, Tung Chee-hwa, ensures a high level of civic engagement and contribution to the development and governance of the Hong Kong Special Administrative Region.

Chan Tan Ching-fen maintains the highly refined, conservative style of a Hong Kong dynastic matriarch. Her attire is consistently elegant and high-quality, favoring classic designer wear. Her aesthetic is one of quiet, established authority, reflecting the historical prestige of her family's shipping and political connections.

Residing in Hong Kong, her luxury is the security of immense wealth derived from global maritime trade. Her life is dedicated to the private management of the family fortune, ensuring the long-term continuation of the Tung and Chan families' influence in Hong Kong's finance and civic life.