```
"Oh?"
```
```
Lin Ju was somewhat puzzled. One aircraft for manned training, another for transport—how could that not be enough?
```
```
"You see, you said you were in a hurry, right? So, there must be a lot of zero-gravity training, correct?"
```
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Lin Ju nodded. Time was pressing, so of course they needed to fly several more times.
```
```
Wang Zhi immediately put on a 'just as I thought' expression:
```
```
"That's right. Drawing 154 is an old airplane after all. To be honest with you, the maintenance process after each flight is longer and more meticulous than for new airplanes. High-intensity flying like current commercial aviation carries risks, especially when you have to perform continuous parabolic flights.
```
```
