01:02

Can the square be added to this tightly-fitted puzzle? #educationaltoys #learningtoys

01:06

Very interesting symmetrical puzzle, fully train children's observation and concentration! #toys

02:09

How to remove the ring stuck in the middle of the bronze knife, cultivate patience and concentration

01:05

Crab mouth escape, educational toys, training children's concentration #educationaltoys #puzzle

01:40

Unbuttoning educational toys, train children's logical thinking ability #educationaltoys

01:13

Can this key be taken out? This is an intelligence test question from Peking University. #education

01:36

So wise! It is rumored that this is the toy that gave Cao Cao the biggest headache.

01:50

The two keys given by Kangxi to Qianlong were called the Inseparable Keys. #educationaltoys

01:31

Brain-burning educational toys, pyramid! #educationaltoys #hands-on-brain #brainteaser

01:07

Brain-burning educational toys, remove thorns from the cage! #educationaltoys #hands-on-the-brain

01:23

Brain-burning educational toys, starfish lock. #educationaltoys #hands-on-the-brain #Hands-on-brain

01:33

This is a willpower toy Chinese knot puzzle.#educationaltoys #puzzle

01:41

Those who can remove the red rope have high IQ. Scissors cannot be used, nor can teeth.#toys

01:49

The gameplay is to remove this U-shaped ring and carefully observe its structure.#toys

01:16

The way to play is to take out the iron spike and observe the whole thing, there is no gap

01:47

How to take out the red rope from this big ring that looks like a snail? #educationalpuzzles

02:01

Developing the brain and exercising thinking through play,

01:49

Let children learn the wisdom of the ancients. This object is called the Square Lock. #toys #puzzle

01:42

It is so clever, a classical and unique toy designed, named Bagua Lock. #toys #puzzle

01:59

Classic educational toy magic ball! Educational toys #toys

01:44

When Yang Guifei was a child, her favorite toy was called the Yangqin Lock. #puzzle

01:07

To take the hexagonal star out of the snake's mouth,

01:27

It is said that this was Cao Cao's childhood toy, named "Carefully Step by Step".

01:39

The ancients were so wise, the bull head buckle is so cleverly designed! #educational toys

01:52

The wisdom of the ancients is very cleverly designed, it is really wonderful! #educational toys

01:39

The wisdom of the ancients, brain-burning educational toys, crab locks.#educational toys

01:31

Love key lock. #educationaltoys #childrentoys

02:13

Without using a single nail or rope, wooden blocks can be combined into a solid whole.#toys #chess

01:33

The wisdom of the ancients is worth learning. #puzzletoys #puzzle

01:45

If you think ancient people were simple, #educationaltoys

02:07

Does anyone know how big a person's brain hole can be?

01:50

It is rumored that this was a favorite toy of Yang Guifei when she was a child, named Yangqin Lock.

01:46

The ancients were so wise, they couldn't let go of the key lock. #educationaltoys #ducktoys

01:46

ABC maze lock that stimulates your thinking and develops your brain. #educationaltoys

01:17

Can the small triangle be added intact to this puzzle? #educationaltoys #hands-on-brain #thinking

02:02

Can you unlock this lock? Brain-burning educational toy magic lock.#educationaltoys #children'stoys

01:58

Can you unlock this love lock with male and female symbols? #educationaltoys #hands-on-the-brain

01:16

Can you add this small triangle to the already completed puzzle?#educationaltoys #developmental toys

01:48

In ancient times, Liu Bei, in order to test the intelligence of his son #ducktoys #ducktoys

02:00

This is an ancient lock that Mr. Zhuge Kongming spent forty-nine days creating.#toys #childrenstoys

01:54

Can you take out this ring? #Puzzle #Toys #toys

01:41

Let your children learn the wisdom of the ancients. #toys #educationaltoys

01:57

Exercise hand eye brain coordination and logical thinking skills# Puzzle Toy # Intelligence Release

01:33

The 28-inch bicycle bar is also known as a bicycle maze lock. #educational toys #concentration

01:29

I have to admire the wisdom of the ancients for designing such a brain burning toy# Puzzle toys

01:38

The incredible bronze buckle problem, the ancient wisdom is truly amazing# Puzzle toys

01:21

Incredible puzzle, hands-on exploration, eye observation, and brain thinking!#Puzzle Toys# Focus

01:48

Incredible classical puzzle toy, horseshoe lock# Puzzle toys # Hands and brains # Thinking training

01:51

which can make them smarter as they play with classical toys,

01:40

We must let the wisdom of the ancients be passed down, and the wonder of the solution# Puzzle Toys

01:36

These two intertwined intelligence clasps. This is a classic thinking test question#Puzzle Toys

01:43

Intellectual decoupling tests children's spatial imagination, logical thinking, and concentration

01:50

Intelligence unlocking, developing thinking, honing patience, both hands-on and brainpower #toys

01:34

Intelligence unlocking develops the brain and exercises children's thinking training through play

02:06

Can you unlock the intelligence button# Puzzle toys # Hands and brains # Thinking training