Courtesy service

Paul Y. K. Tsang complained about an 'expensive trip' (South China Morning Post, July 11) on the cross-boundary coach service between Lok Ma Chau and Huanggang.

The bus fare for the single journey between Lok Ma Chau and Huanggang is $7.

The fare level is determined by operating costs and the nature of the operation.

To help those passengers who do not have Hong Kong dollars in Huanggang, the operator is willing to accept yuan as a kind of courtesy service.

The exchange rate may not be in line with the quoted exchange rate as the operator has to pay extra handling costs to make possible this service at Huanggang.

Passengers are encouraged to pay in Hong Kong dollars.