Does Hong Kong use ACH?

Could you please elaborate on the relevance of the Automated Clearing House (ACH) network in Hong Kong? ACH is primarily associated with the United States' financial system, facilitating electronic payments and transfers between banks. Given Hong Kong's unique financial infrastructure and regulatory environment, I'm curious to know if there's a similar domestic network in operation or if cross-border transactions involving ACH are common. Furthermore, what alternative payment systems are typically used in Hong Kong to facilitate similar transactions?