The Ukrainian army showcased newly constructed trenches in the Zaporizhzhia region. These trenches were built to be highly sophisticated, with reinforced surroundings and drainage facilities. Steel nets to prevent drones were installed on top, effectively defending against bomb-dropping drones and suicide drones.
However, this is just a showpiece presented by Ukrainian military contractors. Real trenches of the Ukrainian army are as muddy as shown by another Ukrainian soldier's footage when it rains. Frontline trenches are basically dug manually by Ukrainian soldiers because construction machinery is highly vulnerable to attacks from suicide drones.
Source: https://www.toutiao.com/article/1828979702639817/
Disclaimer: The article only represents the author's personal opinions.