Original: Only children below the age of 12, senior citizens 65 years or older are eligible for the concessionary rate on all lines. Full-time Hong Kong students between the ages of 12 and 25 qualify for the concessionary rate on all lines except on Airport Express.
Simplified: Only children below the age of 12, senior citizens 65 years or older, or full-time Hong Kong students between the ages of 12 and 25 qualify for the concessionary rate.