Jack of all trade
Having watched three pair of glasses manufactured in seconds, Ling Qingyu had nothing to point out. The quality was guaranteed although she was not sure about the reliability since there wasn't any testing stage.
Ling Qingyu felt comfortable wearing it and mouthed thank you. "Besides, it appears this machine can print out a car engine."
"Yes, it does, Mom." Athena answered. "But I suggest instead of printing the entire thing out straight away, it's better to print out small pieces and assemble them later. Presumably, in case of future repair and maintenance, it will allow convenience."
Ling Qingyu agreed with her point of view and looked toward her confidantes. She saw the two immersed in their marvel of the glasses.
Athena added: "Of course, that is the case until I have a breakthrough in nanotechnologies. Otherwise, we should continue in a conventional way. I can hack if you want to speed up the process."