Before you hate Meng Long for being not very rude to Cang Xue, Try reading about their past that's explained in the 36th chapter. You might understand his reasons and Cang Xue's as well.
If you still can't wait to read until 36 chapters then click the spoiler below.
But if you read the spoiler you will lose 95% fun of the 36th truth chapter.
[Spoiler.]
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He frowned seeing the sudden notification.
'But… How can I betray my Bing'er? She was by my side when I was at my lowest.'
He refused inwardly but another message popped up.
[Host is destined to make a harem with the Supreme Yang Body. It would be better for the host to accept his fate.]
A system message sounded in his mind which caused him to feel bitter.
He halted his footsteps a few meters away from the city gates.
He murmured inwardly, "Why would you say that?"
[Host's body cannot advance in spirit energy ranks without Dual Cultivation as you have a Supreme Yang Body now.]
[Host needs Yin from a woman to refine excessive Yang in the body to transform them into spirit energy. If this Yang energy does not get refined with the help of Yin essence from a woman your body will explode if you try to cultivate.]
"But there are other sources of pure Yin energy that can be used to refine the Yang in my body. Also, I can just wait until I meet Bing'er, can't I?" He thought carefully and responded.
[Ignorance is bliss. You would eventually understand that the moment you stepped on this land, your fate was sealed. You cannot fight it back. Just wait until you meet her. Shangguan Bing'er wouldn't accept a weakling like you.]
'Shangguan Bing'er?' how does she have the same name as the one she had on earth'
[I have information about all the earthlings that were summoned. They weren't given the option to keep their memories like you. Neither did they receive a divine tier treasure to accompany them on the journey.
They only know that they have a mission to protect the goddess from the XiéLóng Temple. That girlfriend of yours doesn't remember you anymore.]
His face darkened upon hearing the new information.
"No, it can't be." He yelled at the system in his mind.
[It is as I'm saying. However, they will recover their memories after their mission in this world is done or if some special circumstances are made.
That would trigger their conscious mind to recall all the memories from their unconscious mind that are hiding deep inside.]
[Additionally, it it would be hard to find pure Yin energy sources without a fortuitous encounter]
He clenched his fist in annoyance after hearing the system statement.
"Damn you…Cang Xue. I know you did it intentionally." He cursed her inwardly as there was coldness flickering on his face.
"I can hear you, darling." An amusing voice sounded in his mind.
"Why did you do this?" He asked her in a grave tone in his mind.
"What do you think?" She asked mysteriously.
"You're so evil. I don't like you." He complained in his mind.
"I love you too, my husband." She said in a sweet voice and then their conversation stopped.
Meng Long knew that she did it so she could open a possible door for herself into his life.
If he didn't accept any other woman than his Bing'er then it would cause Cang Xue to be separated from him so she decided to fabricate an evil plan which would force him to walk a road to become The Harem Emperor.
His Bing'er wouldn't remember him and he would fail to win her heart in this world as a weakling so his only way was Yin-Yang Cultivation to ascend in spirit energy ranks.
If Meng Long doesn't Dual Cultivate with another woman he would stay at the bottom of the food chain.
This wasn't the Earth in a peaceful Era where there was law and order.
He was now living in a world where the rule of the jungle was the only law. If you were weak you would be trampled upon by others.
His predecessor was sent to the Branch Family of Meng Clan for not being able to advance in strength and breakthrough to the Spirit Energy Rank 2 or higher. Even his father abandoned him.
"I don't have a choice. I don't even know where she is. To find her again, I need to get stronger." He clenched his fist as determination glinted in his azure eyes.
He sighed after going through all these thoughts.
"Bing'er would understand my reasons. Even if she gets mad at me for a while, which has a very tiny chance, I can always throw it on the great Heaven for forcing this virtuous young master to walk onto a lecherous path."
A mischievous smile bloomed on his usual calm face.
Meng Long looked at the sky while shaking his head and making a tsk sound.
As if Heaven could understand his shameless act, thunder flashed in the sky without any clouds, and a roaring reverberated in the city.
He heard hurried footsteps coming in his direction as Meng Long turned around.
His heartbeat started thumping faster after seeing the seductive figure approaching.
Her massive twin peaks that were frantically moving up and down because of her fast pace, caused destruction to his innocent mind as they were too irresistible to ignore.
Seeing him turning back, Xue Rou had already caught up to him and stood in front of his face.
"You want me to marry someone right?" She asked with a determined glint in her eyes as if she decided on something daring.
The movement of her chest slowed down that was due to the intense breathing caused by hastily chasing him this long.
"Yeah." He said while scratching the side of his eyes as the question and sight from earlier made him feel awkward.
"Then why can't I marry you?" Her voice sounded beside him.
He almost choked on his breath when the boy heard her question.
"That's because I'm not the Meng Long you know. I'm Yue Yan," He said in a calm voice after he got himself together and looked into her beautiful crimson eyes.
"Okay then Take me as your wife. I want to marry this Yue Yan whose words can lie to me but his eyes won't betray me which are filled with pure affection for me," Her voice was filled with Love as a confident smile was accompanying her cherry-like lips as she exposed his hidden emotions.
"Sister Rou…" He was speechless because of getting caught red-handed.
"Why the hell do I have my predecessor's feelings for this girl in my heart? Why did that demoness put me in such a messy situation?" He cursed Cang Xue inwardly who fabricated all this evil plan to get him back in her life even if it meant to share him with other women.