Nhan Dan Online introduces the top 10 photos sent to the contest, which is hosted by Nhan Dan Television.

Moving an oil drilling platform, a milestone of sovereignty over islands and sea. (Photo credit: Dinh Huu Ngot – Vung Tau city)

Logistics - The path of the future. Do Trong Danh - Ho Chi Minh City. (Photo credit: Do Trong Danh - Ho Chi Minh City)

Spirulina Miho (Photo credit: Tran Thanh Yen - Nghe An Province)

New technique (Photo credit: Nguyen Doan Ket - Kien Giang Province)

River bus (Photo credit: Nguyen Ngoc Hai - Ho Chi Minh City)

Di An clean water treatment (Photo credit: Huynh My Thuan - Ho Chi Minh City)

Green energy (Photo credit: Dang Hong Long - Binh Thuan Province)

A lot of things to do (Photo credit: Do Hieu Liem - Bac Lieu Province)

Taking dried red dragon fruit out of the oven (Photo credit: Nguyen Quoc Huy - Binh Thuan Province)