Why does hades tell the other gods about the missing helm of darkness

Hades does not believe that the other gods will help him search for the Helm of Darkness, so he doesn't tell any of the other guards that it is missing. Eventually, Percy helps him find the Helm of Darkness that was stolen by Luke, so Hades helps Percy out and returns his mother. 

There appear to be cultural differences in parents' discourse on emotions. For example, when discussing the emotion of sadness with their children, Chinese mothers tend to emphasize:

the behaviors and actions that the child might make when experiencing this emotion.

Explanation:

The cultural differences play a very important role in the lives of people. The emotions, moments of happiness and sadness are also different. As given that these differences also effect the way parents discuss emotions with their children.Example of Chinese mother tells us that she makes her child to understand what to do when undergoing through moments of emotions.   Similarly, some culture refer to other techniques like taking a long walk or talk to a friend when experiencing  specific emotions.