Tronando is the present participle of the verb tronar, which literally means "to thunder" or "to crackle". It's a fantastic example of modern slang that paints a vivid picture with sound.
In the song, the line "Sigue tronando las pacas" uses this word to mean spending stacks of money in a flashy, impressive way, much like the English phrase "making it rain". Learning tronando in this context is a great way to understand the confident, successful vibe of the music.
Peso Pluma and Jasiel Nunez are here to talk about success, and they get straight to the point. The song opens with the business side of things: "Se siguen contando los billetes" (The bills keep getting counted) and "Se siguen mandando los paquetes / Hacia otros continentes" (The packages keep getting sent / To other continents). This isn't just a local operation. The lifestyle that comes with it is on full display, with a black Rolls-Royce and plenty of weed from a brand called Jungle Boys. The chorus hits with the line "Llenando el mochilón me activo" (Filling the big backpack, I get active), describing the moment the work begins.
The singers know their success has people watching and wondering how they did it. They have a simple answer: "Tal vez sea porque subí de nivel" (Maybe it's because I leveled up). They acknowledge this success makes others jealous—"Y eso le duele a uno, dos que a tres" (And that hurts one, two, or three people)—but they have no plans to slow down. The attitude is all about pushing forward, with the crew happy and the money still flowing. It's a confident track about reaching the top and enjoying the view, no matter who's watching.