No, it isn't. 'Ye Un Dino Ki Baat Hai' is a work of fiction that may draw inspiration from various elements but is not based on a true account. The characters and events are crafted by the writers' imagination.
One possible theme could be the complexity of human emotions. As the title has love and hate, it might explore how these two opposite feelings can exist simultaneously.
Since I don't know this novel, I can't really say what it's about. It could be a story of love, friendship, or some cultural exploration based on the title, but that's just speculation.
Since I'm not familiar with this particular novel, it's hard to say. However, usually, the title can give some clues. 'Mujhe aazmaati hai teri kami' might imply a story about someone testing or experiencing another's deficiency or shortcoming in some way, perhaps in a relationship or a personal growth context. But this is just speculation without reading the actual novel.
" Descending in the Movie World,"" The Ancient Emperor,"" The Most Powerful Military Advisor: The Genius Guo Jia,"" Heaven Devouring the Universe,"" The Rise of the Most Powerful Warrior at the End of the Han Dynasty,"" The Heavenly Dao Punishes the Gods,"" Senior Martial Brother,"" The Dragon Warrior,"" 1640 Sailing the Four Seas,"" The Demon Calming Chronicle," The Four Seas Beacon," The Great Tang King,"" The Peerless Swordsman," Since 1980,"" The Pirates: The Sword Fairy of Another World." I hope you like my recommendation.😗
Without more context, it's hard to tell the full story of 'yeh un dinon ki baat hai'. It might be a story about old times, perhaps reminiscing about certain events, relationships or situations that happened during a particular period in the past. But this is just speculation.