Finally, I understand why Chinese is considered the most difficult language in the world.

One five one ten is correct, and two five one ten is also correct.
A block of tofu plus two blocks of tofu equals two blocks of tofu plus one block.
One and a half hours is the same as three and a half hours; three and a half hours is also seven and a half hours.
Why is a young master one person, but mother and son are two people?
Letting you take an afternoon nap doesn't mean letting you sleep all afternoon.
Having good fruit to eat means not having good fruit to eat.
When I was a child, I couldn't afford instant noodles; when I grew up, I still can't afford instant noodles.
I used to like one person, then I liked one person.
In Chinese basketball, no one can beat them; in Chinese table tennis, no one can beat them.
An old man cried, and that means the old man was overjoyed.
In winter, wear as much as you can; in summer, wear as much as you can.
If he cares about you, he will care about you.
When dating your girlfriend, he said, "If you arrive first and I haven't arrived, just wait."
If I arrive first and you haven't arrived, just wait.
If you say it like that, then you can't say it like that.
Do you understand?