We have spring, summer, autumn and winter. But it's different between Beijing and Sydney. When it's winter in Beijing, it's summer in Sydney. In Beijing, spring is from March to May. Summer is from June to August. Autumn is from September to November. Winter is from December to February the next year. But in Sydney, it's spring from September to November. Summer is from December to February the next year. Autumn is from March to May. Winter is from June to August. Is that interesting?