People watch Sri Lankan Navy vessels at Galle Face Green in Colombo, capital of Sri Lanka, on Dec. 13, 2020. A public viewing of ships was organized to celebrate the Sri Lanka Navy's 70th anniversary at Galle Face Green from Dec. 9 to 13. (Photos: Xinhua)

Photo taken on Dec. 13, 2020 shows a Sri Lankan navy vessel at Galle Face Green in Colombo, capital of Sri Lanka. A public viewing of ships was organized to celebrate the Sri Lanka Navy's 70th anniversary at Galle Face Green from Dec. 9 to 13.

A man and a child wearing face masks watch Sri Lankan navy vessels at Galle Face Green in Colombo, capital of Sri Lanka, on Dec. 13, 2020. A public viewing of ships was organized to celebrate the Sri Lanka Navy's 70th anniversary at Galle Face Green from Dec. 9 to 13.

Sri Lankan Navy vessels are seen at Galle Face Green in Colombo, capital of Sri Lanka, on Dec. 13, 2020. A public viewing of ships was organized to celebrate the Sri Lanka Navy's 70th anniversary at Galle Face Green from Dec. 9 to 13.

People watch Sri Lankan Navy vessels at Galle Face Green in Colombo, capital of Sri Lanka, on Dec. 13, 2020. A public viewing of ships was organized to celebrate the Sri Lanka Navy's 70th anniversary at Galle Face Green from Dec. 9 to 13.

People watch Sri Lankan Navy vessels at Galle Face Green in Colombo, capital of Sri Lanka, on Dec. 13, 2020. A public viewing of ships was organized to celebrate the Sri Lanka Navy's 70th anniversary at Galle Face Green from Dec. 9 to 13.