A worker picks coffee beans at a coffee estate in Ruiru, a suburb on the outskirts of Nairobi, Kenya, on June 3, 2021. Recently, Kenya entered the coffee bean harvest season. Coffee is one of the major foreign exchange earners for Kenya, with the crop contributing about six percent of total export earnings and 0.3 percent of the country's gross domestic product. (Xinhua/Long Lei)

A worker pours coffee beans to a cleaning station at a coffee estate in Ruiru, a suburb on the outskirts of Nairobi, Kenya, on June 3, 2021. Recently, Kenya entered the coffee bean harvest season. Coffee is one of the major foreign exchange earners for Kenya, with the crop contributing about six percent of total export earnings and 0.3 percent of the country's gross domestic product. (Xinhua/Long Lei)

Workers sort coffee beans at a coffee estate in Ruiru, a suburb on the outskirts of Nairobi, Kenya, on June 3, 2021. Recently, Kenya entered the coffee bean harvest season. Coffee is one of the major foreign exchange earners for Kenya, with the crop contributing about six percent of total export earnings and 0.3 percent of the country's gross domestic product. (Xinhua/Long Lei)

A worker pours coffee beans to a cleaning station at a coffee estate in Ruiru, a suburb on the outskirts of Nairobi, Kenya, on June 3, 2021. Recently, Kenya entered the coffee bean harvest season. Coffee is one of the major foreign exchange earners for Kenya, with the crop contributing about six percent of total export earnings and 0.3 percent of the country's gross domestic product. (Xinhua/Long Lei)

Workers sort coffee beans at a coffee estate in Ruiru, a suburb on the outskirts of Nairobi, Kenya, on June 3, 2021. Recently, Kenya entered the coffee bean harvest season. Coffee is one of the major foreign exchange earners for Kenya, with the crop contributing about six percent of total export earnings and 0.3 percent of the country's gross domestic product. (Xinhua/Long Lei)

A worker pours coffee beans to a cleaning station at a coffee estate in Ruiru, a suburb on the outskirts of Nairobi, Kenya, on June 3, 2021. Recently, Kenya entered the coffee bean harvest season. Coffee is one of the major foreign exchange earners for Kenya, with the crop contributing about six percent of total export earnings and 0.3 percent of the country's gross domestic product. (Xinhua/Long Lei)