English (Source)
Towers gain experience <Highlight>{{TOWER_EXP_GAIN_CHANGE_PERCENT:percent}}%</> faster but upgrading them with gold costs <N_Highlight>{{LEVEL_UP_COST_CHANGE_PERCENT:percent}}%</> more.
Chinese Translation
塔楼经验增长速度<Highlight>{{TOWER_EXP_GAIN_CHANGE_PERCENT:percent}}%</>更快，但用金币升级它们的费用增加<N_Highlight>{{LEVEL_UP_COST_CHANGE_PERCENT:percent}}%</>。