Farmers and their yaks attend a spring ploughing ceremony in Kere Village of Bomtoi Township, Lhasa, southwest China`s Tibet Autonomous Region, March 17, 2018. Traditional spring ploughing ceremonies took place in Tibet`s major cultivation areas on Saturday to pray for a year with good harvests. (Xinhua/Jigme Dorgi)

Farmers present a well-wishing `Qiema box`, filled with mixed foodstuff, to a pair of yaks during a spring ploughing ceremony in Kere Village of Bomtoi Township, Lhasa, southwest China`s Tibet Autonomous Region, March 17, 2018. Traditional spring ploughing ceremonies took place in Tibet`s major cultivation areas on Saturday to pray for a year with good harvests. (Xinhua/Jigme Dorgi)

Farmers toss Tsamba flour into the air during a spring ploughing ceremony in a village in Nedong District of Shannan, southwest China`s Tibet Autonomous Region, March 17, 2018. Traditional spring ploughing ceremonies took place in Tibet`s major cultivation areas on Saturday to pray for a year with good harvests.(Xinhua/Chogo)

A farmer sows highland barley seeds in a spring ploughing ceremony in Kere Village of Bomtoi Township, Lhasa, southwest China`s Tibet Autonomous Region, March 17, 2018. Traditional spring ploughing ceremonies took place in Tibet`s major cultivation areas on Saturday to pray for a year with good harvests. (Xinhua/Jigme Dorgi)

Farmers make live broadcasts of a spring ploughing ceremony in a village in Nedong District of Shannan, southwest China`s Tibet Autonomous Region, March 17, 2018. Traditional spring ploughing ceremonies took place in Tibet`s major cultivation areas on Saturday to pray for a year with good harvests. (Xinhua/Chogo)

Farmers attend a spring ploughing ceremony in a village in Nedong District of Shannan, southwest China`s Tibet Autonomous Region, March 17, 2018. Traditional spring ploughing ceremonies took place in Tibet`s major cultivation areas on Saturday to pray for a year with good harvests.(Xinhua/Chogo)

A farmer chants prayers in a spring ploughing ceremony in Bomtoi Township, Lhasa, southwest China`s Tibet Autonomous Region, March 17, 2018. Traditional spring ploughing ceremonies took place in Tibet`s major cultivation areas on Saturday to pray for a year with good harvests.(Xinhua/Jigme Dorgi)

A farmer attends a spring ploughing ceremony in a village in Nedong District of Shannan, southwest China`s Tibet Autonomous Region, March 17, 2018. Traditional spring ploughing ceremonies took place in Tibet`s major cultivation areas on Saturday to pray for a year with good harvests.(Xinhua/Chogo)

A farmer follows his yaks in a spring ploughing ceremony in Kere Village of Bomtoi Township, Lhasa, southwest China`s Tibet Autonomous Region, March 17, 2018. Traditional spring ploughing ceremonies took place in Tibet`s major cultivation areas on Saturday to pray for a year with good harvests.(Xinhua/Jigme Dorgi)