1. Seat front-to-back spacing: The front-to-back spacing of Pearl Economy Class seats has been expanded from 79 centimeters to 89-94 centimeters, which is a 40% increase in the space available, allowing passengers to stretch their legs more.

2. Supporting ground services: Pearl Economy Class passengers can enjoy exclusive check-in counters, priority baggage collection and delivery, priority boarding, priority upgrade in case of oversale, and catering and accommodation services in case of flight irregularities, which are the same standards as those for China Southern Airlines Pearl Gold and Silver Card members.

3. Considerate cabin services: a bottle of drinking water for Pearl Economy Class passengers before flight departure, a blanket and a newspaper during the journey, and a small meal in the meal service.

4. Mileage Accumulation: Passengers purchasing Premium Economy Class (W Class) will accrue mileage at a rate of 110% for each flight segment.

5. Price: The price of Pearl Economy Class is usually the full price of regular Economy Class.

In summary, there are significant differences between Pearl Economy Class and Economy Class in terms of spacing, service, comfort and mileage accrual, but the exact choice is based on individual needs and budget.