A Chinese navy fleet which is composed of three warships, a hovercraft and three helicopters start force-on-force engagements in the Indian Ocean and the Pacific Ocean on Jan, 20. (Photo source: 81.cn)

A Chinese navy fleet which is composed of three warships, a hovercraft and three helicopters start force-on-force engagements in the Indian Ocean and the Pacific Ocean on Jan, 20. (Photo source: navy.81.cn)

A Chinese navy fleet which is composed of three warships, a hovercraft and three helicopters start force-on-force engagements in the Indian Ocean and the Pacific Ocean on Jan, 20. (Photo source: navy.81.cn)

A Chinese navy fleet which is composed of three warships, a hovercraft and three helicopters start force-on-force engagements in the Indian Ocean and the Pacific Ocean on Jan, 20. (Photo source: navy.81.cn)

A Chinese navy fleet which is composed of three warships, a hovercraft and three helicopters start force-on-force engagements in the Indian Ocean and the Pacific Ocean on Jan, 20. (Photo source: navy.81.cn)

A Chinese navy fleet which is composed of three warships, a hovercraft and three helicopters start force-on-force engagements in the Indian Ocean and the Pacific Ocean on Jan, 20. (Photo source: navy.81.cn)

A Chinese navy fleet which is composed of three warships, a hovercraft and three helicopters start force-on-force engagements in the Indian Ocean and the Pacific Ocean on Jan, 20. (Photo source: navy.81.cn)