Bootloader in any device is a code that executes at very first when the device is turn on. It contains the instructions to load operating system kernel to boot up the device. Bootloader status can be locked or unlocked.

Today almost all of the android manufacturers provide their smartphones with locked bootloader for security purposes. To install a custom ROM or rooting a device you must first unlock the bootloader.  Bootloader status sometimes tell the integrity of a device like for companies like Samsung and Huawei unlocking bootloader may void the warranty and your device will not be trusted anymore.

For some devices relocking a bootloader is possible so if you want [...]

If you want to root your Huawei Honor 4c you first need to unlock bootloader. Huawei does take some extra precautions for security measures. Unlocking bootloader allows you to flash custom recoveries or root your device. So below is the tutorial to show how to unlock bootloader and relock bootloader. However, unlocking bootloader will void device warranty.

Note: UptoAndroid will not be held responsible for any damage to the device during the process. Proceed at your own risk.