HONG KONG — Southern Chinese cities scaled back many aspects of daily life on Tuesday with school and business closures and flight cancellations as the region braced for one of the strongest typhoons in years that has already killed three people and led to the displacement of thousands of others in the Philippines . Residents living in flood-prone areas put sandbags and barriers at their doors, while others taped windows and glass doors to brace for strong winds. Many people stockpiled food and other supplies on Monday, and some market vendors reported their goods were selling out fast.

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