What does Lao Huang think of the weather in Li See?

The weather forecast predicts temperature, zero degree and zero point as follows:

1, the weather forecast is below zero, that is, add a negative sign before the temperature figure. The minus sign "-"is also called the minus sign to indicate that the temperature is zero.

2, the weather forecast is zero degrees, that is, look at the temperature figures. No (minus sign) indicates that the temperature is above zero.