Gently move your hand under the cat's body, just below its front legs, so you have the support you need when you begin to pick up the cat. The cat may resist this or not like it right away, so you should move along and use that second hand soon afterwards.  It doesn't really matter whether you use your dominant hand to support the cat below its front legs or under its hindquarters; it depends on whatever makes you feel more comfortable. Some people actually tuck the front legs together and place the hand under the two legs instead of below them. Now place that second hand under the cat's back legs, giving plenty of support to its legs and bottom. You can almost think of this as cradling the cat with one of your hands. Once you've gotten your hands in position, you can get ready to pick the cat up. Now that you're holding the cat with both hands, just gently lift the cat up, towards your chest. Try to make contact with the rest of your body as early as you can when you lift it up. This can help the cat feel more secure early in the process. If the cat is too heavy to lift up from the ground, you may be better off picking it up from a table or an elevated platform. Once you've picked up the cat while supporting it with both hands, you can hold it against your chest, so most of its body is touching your body. The back or side of the cat's head can rest against your chest, too.  In general, the cat's posture should be fairly straight instead of having the cat sag against your chest, with its head and neck craned downward. This is uncomfortable for the cat and may cause it to struggle and scratch you. You should always pick up a cat with its head above its body. Never pick up a cat upside down! Of course, some cats like to be held differently, especially if it's your cat and it's more comfortable around you. Some are perfectly fine being cradled like babies while others even like placing their hind legs on your shoulders.

How would you rephrase that briefly using Vietnamese?
Luồn một tay dưới cơ thể của mèo, sau hai chân trước trong trường hợp chắc chắn rằng mèo đồng ý cho bế. Đặt tay dưới phần cơ thể gần hai chân sau. Nhẹ nhàng nâng mèo lên. Bế mèo ở phía trước ngực.