Preference

My younger brother knew my knee joint a little pain, he bought me a pair of knee pads.He wanted me to wear it when I play ping pong so as not to further aggravate knee pain. He really has his sister's heart.

When my younger sister came back from Singapore last week, she also bought me some medicated plaster. She said rheumatism bodily pain, bones and joint pain are applicable. At any time it can be affixed to the pain. It can be a comfortable analgesic.

I'm thinking of both their behavior, is that concerned, determined or rivalry. I couldn't make a conclusion. If rivalry, I should pay more attention in order both of them won't feel a preference.
Anyhow I love you two my dear.