It is time to go home already. I woke up early in the morning, and waited in the bus station. There is few people waiting bus, and one old man told me few buses just passed without stoping.
I took bus 95, and then transfer to the train at the waterfront station. I arrived at the airport too early.
The US Customes office is at the Vancouver airport, and I didn’t need to go through at the San Diego airport again. It is much easier and convenient.