A movie poster of One Bucket.

Migrant workers hold paint buckets when embarking a train ahead of the Spring Festival at Jiaxing Railway Station in Zhejiang province, on Jan 21, 2011. [Photo/VCG]

A man sits on a pile of buckets when waiting for a train at Luoyang Railway Station in Henan province, on Jan 28, 2019. [Photo/VCG]

An elderly person carrying empty paint buckets walks down a mountain to fetch water at Langwo village in Shandong province, May 26, 2017. [Photo/VCG]

Urban patrol officers, or chengguan, destroy a bucket used for roasting sweet potato confiscated from roadside venders in Beijing, Dec 14, 2008. [Photo/VCG]

A band performs using waste buckets as musical instruments at 2010 Shanghai World Expo. [Photo/VCG]

Plastic buckets are used to occupy a parking space at a residential community in Jinan, Shandong province, April 1, 2015. [Photo/VCG]

Paint buckets are used as dividing blocks on a road in Zhengzhou, Henan province, April 13, 2016. [Photo/VCG]

A senior resident plays a self-made instrument made of plastic bucket in Guilin, Guangxi Zhuang autonomous region, June 15, 2016. [Photo/VCG]

Residents of Niumian village in Anhui province use plastic buckets as blocks to prevent vehicles from running over crops they dried on the road, Sept 20, 2016. [Photo/VCG]

Paint buckets and plastic bottles are used to grow vegetables at a residential community in Jinan, Shandong province, Jan 9, 2018. [Photo/VCG]

Paint buckets are piled up on top of each other to form the number "2017" at a residential community in Zhengzhou, Henan province, Jan 20, 2017. [Photo/VCG]

A French artist lays out Olympic rings using paint buckets at an art expo held in Shanghai, Sept 6, 2007. [Photo/VCG]

An elderly barber washes the head of a customer with water flowing from a paint bucket at a barber shop in Chongqing municipality, Nov 24, 2017. [Photo/VCG]

Residents in Hanzhong, Shaanxi province, use paint buckets and plastic bottles to fetch water from a public toilet, Jan 7, 2019. [Photo/VCG]