Hi i had sent message to our host on my incoming Hongkong Accommodation and due to the Hongkong Protest we might cancel our accommodation my host said that we need to contact Airbnb on the full refund.
Your host is correct they cannot cancel the booking for you, you need to do this through Airbnb.
You can only be refunded in line with the cancellation policy you booked under, unless there is government advice that it is dangerous to travel there.