class Warehouse:
    """
    The class manages inventory and orders, including adding products, updating product quantities, retrieving product quantities, creating orders, changing order statuses, and tracking orders.
    """
    def __init__(self):
        self.inventory = {}  # Product ID: Product
        self.orders = {}  # Order ID: Order

    def update_product_quantity(self, product_id, quantity):
        """
        According to product_id, add the quantity to the corresponding product in inventory.
        >>> warehouse.add_product(1, "product1", 3)
        >>> warehouse.update_product_quantity(1, -1)
        >>> warehouse.inventory
        {1: {'name': 'product1', 'quantity': 2}}
        """

        if product_id in self.inventory:
            self.inventory[product_id]['quantity'] += quantity

    def get_product_quantity(self, product_id):
        """
        Get the quantity of specific product by product_id.
        :param product_id, int
        :return: if the product_id is in inventory then return the corresponding quantity,
                or False otherwise.
        >>> warehouse.add_product(1, "product1", 3)
        >>> warehouse.get_product_quantity(1)
        3
        >>> warehouse.get_product_quantity(2)
        False
        """

        if product_id in self.inventory:
            return self.inventory[product_id]['quantity']
        else:
            return False

    def create_order(self, order_id, product_id, quantity):
        """
        Create a order which includes the infomation of product, like id and quantity.
        And put the new order into self.orders.
        The default value of status is 'Shipped'.
        :param order_id: int
        :param product_id: int
        :param quantity: the quantity of product that be selected.
        :return False: only if product_id is not in inventory or the quantity is not adequate
        >>> warehouse.add_product(1, "product1", 3)
        >>> warehouse.create_order(1, 1, 2)
        >>> warehouse.orders
        {1: {'product_id': 1, 'quantity': 2, 'status': 'Shipped'}}
        >>> warehouse.create_order(1, 2, 2)
        False
        """

        if self.get_product_quantity(product_id) >= quantity:
            self.update_product_quantity(product_id, -quantity)
            self.orders[order_id] = {'product_id': product_id, 'quantity': quantity, 'status': 'Shipped'}
        else:
            return False

    def change_order_status(self, order_id, status):
        """
        Change the status of order if the input order_id is in self.orders.
        :param order_id: int
        :param status: str, the state that is going to change to
        :return False: only if the order_id is not in self.orders
        >>> warehouse.add_product(1, "product1", 3)
        >>> warehouse.create_order(1, 1, 2)
        >>> warehouse.change_order_status(1, "done")
        >>> warehouse.orders
        {1: {'product_id': 1, 'quantity': 2, 'status': 'done'}}
        """

        if order_id in self.orders:
            self.orders[order_id]['status'] = status
        else:
            return False

    def track_order(self, order_id):
        """
        Get the status of specific order.
        :param order_id: int
        :return False: only if the order_id is not in self.orders.
        >>> warehouse.add_product(1, "product1", 3)
        >>> warehouse.create_order(1, 1, 2)
        >>> warehouse.track_order(1)
        'Shipped'
        """

        if order_id in self.orders:
            return self.orders[order_id]['status']
        else:
            return False

Method:
def add_product(self, product_id, name, quantity):
        if product_id not in self.inventory:
            self.inventory[product_id] = {'name': name, 'quantity': quantity}
        else:
            self.inventory[product_id]['quantity'] += quantity

Summary: Add product to inventory and plus the quantity if it has existed in inventory. Or just add new product to dict otherwise.