Riddles from Ancient Countries

The dragon has been a mysterious totem since ancient times. Han Yu's "The sky is dark, the black dragon is moving on the earth, and the male and female are following with thunder and lightning." Huang Tingjian's "Thunder shook the sky and earth, dragons and snakes stung, and the rain fell on the grass and trees in the countryside." People's understanding of dragons seems to have transcended myths. Su Ximo, who is in Jinxi No. 1 Middle School, thought of yesterday's rainy night with thunder and lightning during the tedious high school class. A black shadow spread out in the clouds like a holy object...