1. Efficient management and cost control: During the operation of Jinggang subway, the cost was effectively controlled and the profitability was improved through refined management.
2. Advertising revenue: Beijing-Hong Kong subway has arranged a large number of commercial advertisements in carriages, platforms, transfer lanes and entrances and exits, which has brought considerable advertising revenue to the subway company.
3. Government subsidies: In order to encourage the introduction of social capital and PPP model, the Beijing Municipal Government gives extra subsidies to the Beijing-Hong Kong Metro Company every year, which also increases the company's profits to some extent.
Generally speaking, the profit of Beijing-Hong Kong subway mainly benefits from many factors such as efficient management and cost control, advertising revenue and government subsidies.