徐三盯着李宁玉鬼魅的一笑，“具体方向没有，不过李小姐可以把尺度放大一点。”

“有多大？”

“尺度要么在十的负三十次方厘米以下，要么在一百亿光年以上。”徐三老神在在的回答道。

“啊！”...

徐三 stared at Li Ning''s smile, her eyes sparkling with amusement. "Specific direction?" he asked, his brow furrowed in concentration. "I''m afraid I don''t have one," she replied, her voice husky and confident.

Xué Sān looked at Lǐ Níng for a long moment, his expression unreadable. He seemed to be sizing her up, weighing her options. Finally, he spoke, his voice low and smooth. "Very well, then. If the scale is to be used, I''ll have to rely on my own judgment." He paused, his eyes narrowing as he calculated. "If I were to estimate, I''d say... ten centimeters at most."

Lǐ Níng laughed, a throaty sound that sent shivers down Xué Sān''s spine. "Ten centimeters?" she repeated, her voice laced with amusement. "You think you can gauge the size of my smile in mere centimeters?"

Xué Sān nodded solemnly, his expression unyielding. "I''m not estimating your smile itself, but rather the distance between your lips when it''s at its widest point." He leaned forward, his eyes locked on Lǐ Níng''s. "You see, the key to measuring the width of a smile is to consider the size of the mouth that contains it."

Lǐ Níng raised an eyebrow, her expression intrigued despite herself. "Go on," she said, her voice barely above a whisper.

Xué Sān nodded, his eyes glinting with excitement. "The human mouth is capable of opening wide enough to swallow large objects," he explained, his voice full of conviction. "But the width of that open mouth varies from person to person."

Lǐ Níng''s eyes sparkled with amusement as she watched Xué Sān pace back and forth across the room. She had no idea where this was going, but she couldn''t help feeling drawn in by his intensity.