Get weather information for a specified city Args: city: City name (supports Chinese or English, e.g., Suzhou, suzhou) units: Temperature unit (metric: Celsius, imperial: Fahrenheit) lang: Response language (zh_cn: Chinese, en: English) Returns: WeatherData: Object containing weather information 获取指定城市的天气信息 Args: city: 城市名称（支持中文或英文，如：苏州、suzhou） units: 温度单位 (metric: 摄氏度, imperial: 华氏度) lang: 返回语言 (zh_cn: 中文, en: 英文) Returns: WeatherData: 包含天气信息的对象
Get weather forecast information for a specified city Args: city: City name (supports Chinese or English, e.g., Suzhou, suzhou) days: Number of forecast days (up to 5 days) units: Temperature unit (metric: Celsius, imperial: Fahrenheit) lang: Response language (zh_cn: Chinese, en: English) Returns: dict: Dictionary containing weather forecast information 获取指定城市的天气预报信息 Args: city: 城市名称（支持中文或英文，如：苏州、suzhou） days: 预报天数（最多5天） units: 温度单位 (metric: 摄氏度, imperial: 华氏度) lang: 返回语言 (zh_cn: 中文, en: 英文) Returns: dict: 包含天气预报信息的字典
API key for OpenWeatherMap. Required for fetching weather data.
Port on which the server runs (if applicable)
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