The crime of sabotaging traffic facilities refers to intentionally destroying tracks, bridges, tunnels, roads, airports, waterways, lighthouses, signs, or other sabotage activities that are in use or have been delivered, so that trains, cars, trams, ships, aircraft capsize and damage is dangerous enough to endanger public safety.
According to the above definition, which of the following acts does not constitute the crime of sabotaging traffic facilities?
Xiaoyan is an engineer of a construction engineering group. due to labor conflicts with the company, he deliberately used inferior cement materials during the construction of the bridge to secretly reduce the load-bearing capacity of the bridge