A material bag (silk road) is an item in Evony TKR (The King's Return). It can be found after killing certain monsters or bosses, with some of them listed below.
The description of Material Bag (Silk Road) in Evony TKR says:
Open to receive a random lv5 Equipment material.
Material Bag (Silk Road) is known to drop from a number of bosses or monsters upon killing, including Behemoth, Phoenix, Jormungandr and Typhon.
Note: This list may be incomplete.
Material Bag (Silk Road) is known to potentially be obtainable from opening Lucky Box Ⅹ. The links for each item are below:
Note: This list may be incomplete.