高清
After further questioning, we found out that Song Yingxing only went to bed late at night every day and got up on time at 9:00 in the morning. He had almost no time to spare. These days, in addition to helping Bi Maokang create a wire winding machine, I also wrote a lot of sweet potato sowing outlines, but there was not much progress in the hydraulic hammer forging machine....
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