How many seconds did it take you to solve this riddle?
Renowned for its extreme difficulty in learning, Vietnamese also offers countless interesting aspects, from its complex diacritics to its diverse synonym system. With only 29 letters and 5 punctuation marks, Vietnamese generates numerous sentences for users to express their thoughts, along with fascinating questions that challenge the thinking and application skills of Vietnamese speakers.
Due to this richness, word puzzles also attract many Vietnamese people because they always contain both intrigue and knowledge. To confirm this, invite you to test your skills with the following intriguing puzzle:
Which vehicle never decreases?

Image: Swift as Lightning
Hint: Here's a type of vehicle commonly used as a main combat weapon in wars worldwide. If you've seen the hint and pondered for more than 15 seconds without finding the answer, then check out the solution below.
The answer to this question is: TANK.
A tank, also known as an armored combat vehicle, is equipped with a large cannon and moves on tracks designed for independent offensive or defensive actions, either alone or in conjunction with other combat units. This firepower typically comes from a main gun in a rotating turret, heavily armored and capable of moving across various terrains to protect the tank and its crew, allowing it to perform all combat tasks on the battlefield.
In the above scenario, this is a fun riddle based on wordplay; 'tank' refers to 'does not decrease,' which makes perfect sense.

That's how Vietnamese works, turning a tank into an interesting question while also describing its shape and purpose. Can you answer this question too?
