In Royal Nirvana, Crown Prince Xiao Dingquan loved Lu Wenxi far more deeply than Zhang Nianzhi.

While he treated Nianzhi with immense respect, tenderness, and gentleness, his bond with her was built on protective duty, guilt, and a desire to be a good husband.

In contrast, his love for Lu Wenxi was a profound, world-shattering soulmate connection that withstood mutual destruction, physical trauma, and political despair.

The evidence contrasting the two relationships reveals the depth of his feelings:

1. Spiritual and Intellectual Connection

• With Lu Wenxi: Their love was rooted in the mind and soul before they even saw each other's faces. They fell in love behind a screen, connecting deeply through their shared mastery of calligraphy (the Shujin style), art, poetry, and identical moral philosophies. Wenxi was his intellectual equal and the only person who truly understood his ideals.

• With Zhang Nianzhi: Their marriage was purely political. Nianzhi was a traditional, gentle, and sheltered noblewoman. She could not understand the dark, complex machinations of the court, nor could she engage with Dingquan on the same intellectual and psychological level as Wenxi.

2. The Weight of Their Despair vs. Solace

• With Zhang Nianzhi: Dingquan’s dynamic with Nianzhi required him to constantly wear a mask. Because she was gentle and fragile, he felt a intense duty to shield her from the horrors of the palace. He could never show her his absolute weakest, darkest self because he didn't want to terrify or break her.

• With Lu Wenxi: As "Maid Gu," Wenxi saw Dingquan at his absolute worst—broken, weeping on the floor, and stripped of all princely dignity. He developed a total psychological dependency on her. He could only abandon his defenses, express his deepest terrors, and bleed emotionally in front of Wenxi.

3. Mutual Sacrifice and the Trauma Bond

• With Zhang Nianzhi: Dingquan’s rage over Nianzhi’s death was intense, but it was driven largely by the shock of losing an innocent woman under his protection and the murder of his unborn child. It was a tragedy of lost innocence and failed duty.

• With Lu Wenxi: Dingquan and Wenxi shared a literal and figurative "trauma bond." They repeatedly hurt, tested, and saved each other. Even after Dingquan subjected her to suspicion and torture, their bond did not break. When he finally discovered her true identity, the crushing guilt and reverence he felt proved that she was entirely woven into his psyche. He was willing to lose his footing, his political leverage, and his own sanity just to preserve her safety.

Summary of the Difference

Dingquan loved Zhang Nianzhi as a cherished obligation and an innocent wife he was duty-bound to protect. He loved Lu Wenxi as his own soul—a painful, desperate, and irreplaceable love that defined his entire existence