Tang Wanzhuang thought that it was just a figment of her imagination. From Zhao Changhe's previous lack of awareness about her witnessing someone in the illusion, it wouldn't matter whether she reciprocated or not, since he wouldn't know anyway...
So, just be happy for herself.
She didn't get to properly experience a kiss in reality, so why not allow it in an illusion?
Unlike last time when her mind was a muddle and she didn't feel anything, this time Tang Wanzhuang found the experience quite comfortable.
So this is what it feels like... she heard that Dual Cultivation was very pleasurable, and his treatment plan indeed involved Dual Cultivation as a lead, which really soothed the soul and moisturized the meridians.
And he was so gentle, with such a cautious demeanor.
As expected of the image she had conjured up in her mind, tee hee.