We have spring, summer, fall and winter here. 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. Fall 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. Fall is from March to May. Winter is from June to August. Is that interesting?