Bai continued teaching theoric knowledge to Chenxiang. Of course, Bai knew that was impossible to get her to learn all of it as her foundation was too poor compared with Earth, and there wasn't enough time to deepen. So Bai's solution was explaining the fundamentals, about waves, particles, energy... All of them helped with practical uses. Bai prepared all sorts of practices with the uses of mirrors and lens to show her the effects of them.
Chenxiang showed her wits and a high-speed procession of information, even when she started very confused and tried to ran away, needing to be stopped by Bai, and sometimes it seemed that there was smoke coming from her ears, she quickly started putting all her effort to it, showing incredible results.
Only two weeks after starting the classes, Chenxiang found her comprehension of light greatly enhanced and a boost of her strength and quality accordingly, making her even more eager to continue with it.
In these two weeks, Bai and Chenxiang became closer and her relation was approaching as before, joking all around with smiles. This was when there wasn't class, in class Bai became a demon that didn't let Chenxiang to even refute, super controller.
"...And with this, we finish today's class" stated Bai to Chenxiang, finishing the class "We had finished studying the fundamentals and the geometrical optics were we considered the light as a rays, its law of reflection and refraction in superficies and lens. Tomorrow, we will start the study of the physical optics, were we will study the light as a wave and its properties and reactions."
Finished the class, Bai left the room. Chenxiang, instead of leaving, stood there more time, furiously quickly writing in her papers her new knowledge and her thoughts about it. Time to time, near the table where they had the experiments, to practice with them using her powers.
"Tock, tock!" Someone knocked on the door, but Chenxiang didn't even realize too immersed in her thoughts. Bai knowing that the most probable was that she wouldn't open, he entered the room without permission, while holding two cups.
Bai approached Chenxiang and carefully touched Chenxiang's shoulder. "What!?" Chenxiang jumped surprised at the contact, seeing Bai, she quickly realized her problem "Sorry, Bai. I was too immersed in it" she rubbed her head a little embarrassed.
"It's good to put effort and have passion for learning and training. But" Bai said looking at Chenxiang's papers "Too much is not always good. You should take some rest and let the information soak." Bai gave a cup to Chenxiang "Take. Have some rest."
Chenxiang took the cup with a smile and both of them left to the balcony and sat on a bench there seeing the landscape. Chenxiang took a sip and smiled "Pomelo juice."
"I thought that you would like it" Bai explained "You usually took it for breakfast when we were at Heaven Dou Academy and sometimes after training."
"Yeah" Chenxiang nodded "It's my favorite. For you to remember that even after so many years, I'm surprised." She made a thoughtful face "Thinking about it, I always left a big impression to everyone. I should have been offended if you didn't remember" She teased Bai giggling.
Bai smiled at her antics and let his body backward "I like it. A long time had passed since I can relax without being in fright to disappear if I lowered my guard. Even if I knew it won't last much." Bai said with some yearning and sad voice.
"Bai" Chenxiang listening Bai's tone was a little worried.
"Don't mind it, Xiang" He waved his hand "At final, it was true that that 'Bai' had disappeared," Bai said laughing "I truly like it, being with you here, like before calmy staying together and talking. Our classes might be the best of the day. It's always funny seeing your blank face as you don't understand anything."
"Hey!" Chenxiang puffed her cheeks "How did you expect something to react before that incredible and sudden information? If someone must be criticized, should it be you as the teacher to start so suddenly" She blamed "In my opinion, I attained some familiarity fairly quickly, not all can be as intelligent and talented as me as their student, you're lucky"
"Without any doubt you're must best student" Bai stated with some proud "And the worst, the laziest and hardworking... Summarizing my only one!" This caused both of them to laugh.
"Xiang" Bai stopped laughing and turned serious "What are your feeling for me?" he asked. "It's not like a want to force you or anything. Even if you deny me, I will continue this teaching and we can forget about each other and don't meet again."
"I have mixed feelings about it" Chenxiang turned serious "On one hand, you continue being Bai, sometimes seemed that nothing really changed. On the other hand, you also are the one that tormented him. There's also the fact that Mayi's death and the reaction with you" She said thoughtfully.
"So?" Bai asked with a mix of worry and eagerness.
"I hate myself" Bai opened his eyes surprised. Chenxiang breathed loudly and shouted "I love you! I love you even more than before. You are much free and relaxed now, before you also seemed to have a lot of weight under your shoulder and tried to keep it all for yourself, hiding your true self and being always stressed. I much prefer you as now" Chenxiang made a forced smile at Bai "Even a part of me is happy about Mayi's death, you would always be with her and I am glad that finally my feelings are reciprocated without her being in the middle" Chenxiang confessed.
"Even when I should hate you, even when I must be sad about Mayi, I can't force myself to think it" Some tears started falling from her eyes "I am a horrible person."
Bai leaned towards Chenxiang and cleaned her tears with his hands "You're not" Bai comforted her "There's nothing wrong trying to find your own happiness. I love you, Xiang. And I will always love you."
Chenxiang lifted her head looking at Bai's warmly and full of love eyes and stopped crying and leaned to Bai, the lips of both meeting in a sweet kiss that didn't pass long before they started intertwining their tongues and hugging each other in a passionately kiss.
After some minutes, they finally separated. Both of them were panting a little with red faces. Bai smiled "Xiang. Would you be my girlfriend?"
Chenxiang smirked and lifted her eyebrow "Only girlfriend? You aren't wetting your hands in it" she teased.
Bai touched his inventory bracelet, on his hand appearing a jade box, inside it a Crystal Blood Dragon Ginseng. Chenxiang was shocked, realizing what that means. "I was already accepted by your grandfather, but even so" The box disappeared and Bai kneeled "Bai Chenxiang. Would you do the honor to accept me as your fiancee?"
Chenxiang stopped still, quickly changing to glaring him "Don't be so formal!". She jumped at Bai's arms and hugged him leaning on his chest, both of them falling to the bench "Of course, I'll accept!" She kissed her again "I love you, Bai."
"I love you, Xiang." Both of them stood warmly hugging each other until the sunset.