This year, there is a shortage of migrant workers in southern China. The reason is either because migrant workers have found jobs in their hometowns; or because migrant workers in the south have wages that are too low to be attractive anymore; In the countryside, both incomes can be increased and a stable family life can be achieved. This year, China's new rural construction has indeed accelerated, and farmers can both increase income and lead a stable family life in the countryside. Based on this, can we introduce the cause of the "migrant labor shortage" in the southern region this year? ['It is because migrant workers have found work in their hometown.', 'Possibly because migrant workers have found work in their hometown.', 'Not because migrant workers have found work in their hometown.', 'It is because the wages of migrant workers in the south are too low to be attractive anymore.']