Trong Mai is situated on the south-west side of Ha Long Bay, 5 km from the tourist wharf near to Dinh Huong Islet. In a somewhat large expanse of open sea, the island seems to grow up from the bottom of the deep emerald waters. At sunset, the island with the height of over 10 m is bright red and in a somewhat tottery position.
It has the shape of a cock couple rising from the blue sea. These two huge cocks have stood by the other for thousands of years. As the story told by the locals, Trong Mai Islet represents for faithfulness of love.
Their tiny legs support heavy bodies, and it appears that one strong wave could throw the two stone blocks into the sea. However, hundreds of millions of years have passed, and the Trong Mai is still there.
The islet is most beautiful at dawn, when the sun sheds the first shine of a day and light up the cock couple.