By the mathematical challenge, I realized the importance of practical ability to mathematics.The challenge of mathematics is a harvest for me. We have worked hard, although we have not achieved good results, but let us know the importance of unity, but also the harvest of friendship.Math is my favorite subject. It makes me feel the joy of life. The charm of mathematics is endless, I will always love him until forever.Thanks to Kevin for the math challenge, it makes learning to unite to learn to think, to exercise our thinking, but also I know the relationship between mathematics and life. Finally, thanks to Kevin for giving me the chance to take part in the math challenge.Welcome to China again.Welcome to Gang Zhong too.I look forward to your next arrival. Goodbye.Zayne