How did the water passengers in Sheung Shui, Hong Kong find them?

These water passengers are gathered at the exits on both sides of Sheung Shui Railway Station, which is easy to be found.

Supplement: I have looked for water passengers several times before. I brought one or two boxes of things three years ago, 150 Hong Kong dollars. Pass the customs together, a little distance, usually like this.

Supplementary landlord's question: we should go through the customs together, but not necessarily together, but at a distance. Just in case the customs officer asks questions. Pay the money first. I gave it to them on the train. They have a receipt for you, but you must have it.