Create a beautiful garden scene that includes a Koi pond, natural landscape, and a peaceful gazebo. The Koi pond should be at the center, with clear water and colorful Koi fish swimming. Surrounding the pond are lush green plants and diverse flowers, creating a natural beauty. The gazebo is placed near the pond, designed elegantly and harmoniously with the nature. The scene should evoke a sense of tranquility, relaxation, and harmony with the environment