VeChain (VEN) is rebranding to VeChain Thor (VET). They will implement a similair system as NEO/GAS. This means when you hold VET in your wallet you will receive THOR tokens. See it as a form of dividend.
VET offers 5 different types of earning THOR. Normal staking (that means if you hold the coins in a wallet you will receive a reward) and four different types of masternodes (Strenght 10.000+, Thunder 50.000, Mjolnir 150.000 and Thrudheim 250.000 tokens)
There are great tools on the internet to calculate how much THOR you can generate holding VET in a wallet or running a masternode. One of them is www.thorcalculator.com created by a developer called NinjaWTF.
On the website you can fill in the amount of VET you own. If you press calculate it calculates – using the actual block creation time on the VET blockchain – the amount of THOR that you generate.