How does Tchaikovsky's music reflect the characteristics of Russian national music?

Pyotr Il'yich Tchaikovsky's creation profoundly reflects the Russian intellectuals' desire for light and their repressed feelings for the dark reality in the second half of19th century under the decadent czar's autocratic system. He is good at capturing the thoughts and feelings of characters in conflicts and revealing their inner experiences. He inherited the achievements of Russian music development since glinka. He also paid attention to absorbing the experience of western European music culture development and learning from folk music. He combined highly professional creative skills with Russian national music traditions, and organically integrated clear and touching melodies, strong dramatic conflicts and rich national styles into his works, making valuable contributions to Russian music culture and world music culture.