Make the cake: Place 2 cups bleached flour, 2 cups granulated sugar, 1 teaspoon baking soda, 1/2 teaspoon Chinese five-spice powder, and 3/4 teaspoon kosher salt in a large bowl and whisk until lump-free. Add the can of crushed pineapple, 2 large eggs, and 1 tablespoon vanilla extract. Whisk to blend well. Scrape into the prepared pan. Bake on the upper rack until a toothpick inserted in the center of the cake comes out clean, 30 to 35 minutes.