On the same horizon? 在同一水平線上?

Glass 1 - bottled water from Hong Kong

Glass 2 - tap water from Hong Kong (Heyuan)

Glass 3 - Ngau Tam Mei Village after High Speed railway works started nearby

Glass 4 - Lamma Island Tung Wan( East Bay) after plastic pellets washed ashore

Glass 5 - Big Wave West Village within Plover Cove's catchment area

Glass 6 - Pearl River (Guangdong, China)

Done