beautiful azure water of lagoon in the halong bay descending dragon bay at the gulf of tonkin of the south china sea, vietnam.

asia azure background bay beautiful blue boat calm cat china chinese descending destination dragon exotic exoticism formed gulf halong heritage island junk karst lagoon landmark landscape life lifestyle mountain nature postcard red romantic sail sailing scene scenic sea silhouette sky south street sunset symbol tonkin tourism towersisles travel tropical unesco vacation vietnam water wonder zen