TECHNOLOGY · CIVILIZATION-SPECIFIC
Paper Money
Lumberjacks also produce gold.

Overview
Lumberjacks also produce gold.
Effect and affected units
Paper Money changes lumberjacks generate 0.014 gold per second. Read the named target carefully: this effect applies only to the units, buildings, or economy described in its entry. This is the main reason to research it; compare the affected units with the army you expect to field.
Research cost and timing
Research is available in Imperial Age at the Castle. The recorded cost is not separately recorded, and the research time is 60 seconds. Consider whether the upgrade will affect enough units or workers to repay that investment before the match is decided.
Matchup plan: Paper Money late-gold planning
Paper Money turns Vietnamese woodcutting into a slow additional gold stream. It is most useful when ordinary gold deposits are exhausted and Market prices have fallen, rather than as a replacement for early gold mining Keep lumber production active through the late game and research Paper Money when a broad wood economy can support a trickle of gold. Use that income to sustain occasional gold-unit reinforcements, upgrades, or siege support while the main army leans on units that cost less gold. Continue trading when routes are safe, and treat the technology as one part of a longer resource plan The gold arrives too slowly to maintain a full gold-heavy army by itself. Do not research it while the Market still offers a better immediate exchange or when gold camps remain safe; protect lumberjacks and preserve a mixed composition so the passive income has time to matter
Effect and research timing
Lumberjacks also produce gold. Effect: Lumberjacks generate 0.014 gold per second. Research becomes available in: Imperial Age; Research at: Castle; Research time: 60 seconds. This research is restricted to its named civilization, so it is part of that faction’s identity rather than a shared option.
Research details
- Age
- Imperial Age
- Research building
- Castle
- Research time
- 60 seconds
- Effect
- Lumberjacks generate 0.014 gold per second
Research requirements and effects for this entry.
- Focus
- Unique technology · Vietnamese
- Signature / category
- Unique technology · Vietnamese
- Release / context
- Civilization research
- Region
- Civilization-specific
- Classification
- Unique technologies