Zhao Gang wasted no time. In front of Lin Mo, he called Academician Liu at the Biological Research Institute and switched on the speakerphone.
The call connected after just two rings. A faint hum of running equipment came through the speaker, along with Liu Chengen's slightly impatient voice:
"Little Zhao, I'm in the middle of a cell fusion experiment. Make it quick."
"Academician Liu, I'd like to confirm something." Zhao Gang took no offense at being called Little Zhao. He glanced at Lin Mo and asked directly,
"Is there reproductive isolation between Blue Star Humans and the various races of Terra?"
"Yes." Liu Chengen answered crisply, without even half a second's hesitation.
Zhao Gang had braced himself for an academic analysis. He had not expected an immediate conclusion and asked in surprise:
"You've already researched it?"
"Obviously. The two worlds have been open to each other for so long, and interspecies contact is becoming increasingly frequent. Do you expect us to wait until you remember to ask before researching an issue involving public health and population safety?" Liu Chengen replied irritably,
"From the Holy Human Race, Elves, and Dwarves to Half-Orcs, we've collected blood, somatic cell, and reproductive cell samples from all of them. We've conducted more than one round of experiments, and so far, none can form a normal embryo with Blue Star Humans."
Hearing this, Lin Mo immediately leaned toward the phone:
"Academician Liu, not even the Holy Human Race?"
"In both appearance and organ structure, they seem almost identical to us. Why is there reproductive isolation with them too?"
"Looking alike doesn't mean belonging to the same species." The sound of records being shuffled came from Liu Chengen's end, and his tone grew a little more patient,
"Take drinking cups, for example. They may have the same