KOLOMNA, Feb. 12, 2016 (Xinhua) -- Russian speed skater Natalya Voronina competes in 3000m distance during World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. World Single Distances Speed Skating Championships took its start on Feb. 11, 2016, in Kolomna, Russia.(Xinhua/Evgeny Sinitsyn)

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Patrick Beckert of Germany competes in men's 10000m distance during World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. (Xinhua/Pavel Bednyakov)

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Silver medalist Ted-Jan Bloemen from Canada, Gold medalist Sven Kramer from the Netherlands and Bronze medalist Erik Jan Kooiman (From L to R) react on awarding ceremony after men's 10000m distance at World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. (Xinhua/Pavel Bednyakov)

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Canadian speed skater Ted-Jan Bloemen competes in men's 10000m distance at World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. (Xinhua/Pavel Bednyakov)

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Seung Hoon Lee of South Korea competes in men's 10000m distance during World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016.(Xinhua/Pavel Bednyakov)

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Zhao Xin of China competes in women's 3000m distance during World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. (Xinhua/Pavel Bednyakov)

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Zhao Xin of China competes in women's 3000m distance during World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. (Xinhua/Pavel Bednyakov)

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Russian speed skater Olga Graf competes in 3000m distance during World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. World Single Distances Speed Skating Championships took its start on Feb. 11, 2016, in Kolomna, Russia. (Xinhua/Evgeny Sinitsyn)

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Silver medalist Ireen Wust from the Netherlands, Gold medalist Martina Sablikova from the Czech Republic and Bronze medalist Antoinette De Jong from the Netherlands (From L to R) react on awarding ceremony during 3000m distance in World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. Martina Sablikova claimed the title with 4:03.05. (Xinhua/Evgeny Sinitsyn)

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Czech speed skater Martina Sablikova celebrates victory during 3000m distance in World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. Martina Sablikova claimed the title with 4:03.05. (Xinhua/Evgeny Sinitsyn) 10

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Czech speed skater Martina Sablikova (R) and Ireen Wust from the Netherlands congratulate each other on awarding ceremony during 3000m distance in World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. Martina Sablikova claimed the title in 4:03.05.(Xinhua/Evgeny Sinitsyn) 11

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Dutch speed skater Sven Kramer competes in 10000m distance at World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. Sven Kramer claimed the title in 12:56.77. (Xinhua/ Evgeny Sinitsyn) 12

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Silver medalist Ted-Jan Bloemen from Canada, Gold medalist Sven Kramer from Netherland and Bronze medalist Erik Jan Kooiman (From L to R) react on awarding ceremony after 10000m distance at World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. Sven Kramer claimed the title in 12:56.77. (Xinhua/Evgeny Sinitsyn) 13

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Dutch speed skater Sven Kramer celebrates after 10000m distance at World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. Sven Kramer claimed the title with 12:56.77. (Xinhua/Evgeny Sinitsyn) 14

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Canadian speed skater Ted-Jan Bloemen celebrates after 10000m distance at World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. (Xinhua/Evgeny Sinitsyn) 15

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Canadian speed skater Ted-Jan Bloemen competes in 10000m distance at World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. (Xinhua/Evgeny Sinitsyn) 16

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Dutch speed skater Sven Kramer celebrates on awarding ceremony after 10000m distance at World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. Sven Kramer claimed the title with 12:56.77. (Xinhua/Evgeny Sinitsyn) 17

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Czech speed skater Martina Sablikova (L) and Marije Joling of the Netherlands compete during 3000m distance in World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. (Xinhua/Evgeny Sinitsyn) 18

KOLOMNA, Feb. 12, 2016 (Xinhua) -- Silver medalist Ireen Wust from the Netherlands, Gold medalist Martina Sablikova from Czech Republic and Bronze medalist Antoinette De Jong from the Netherlands (From L to R) react on awarding ceremony during 3000m distance in World Single Distances Speed Skating Championships in Kolomna, Russia, on Feb. 11, 2016. (Xinhua/Pavel Bednyakov) 19