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+The module `macroecon` provides multiple API of getting macroeconomic indicator:
+
+```python
+from CEDA.macroecon import cn
+gdp_quarterly = cn.gdp_quarterly() # China's gdp (quarterly)
+ppi_monthly = cn.ppi_monthly() # China's ppi (monthly)
+cpi_monthly = cn.cpi_monthly() # China's cpi (monthly)
+pmi_monthly = cn.pmi_monthly() # China's pmi (monthly)
+fai_monthly = cn.fai_monthly() # China fix asset investment (monthly)
+hi_old_monthly = cn.hi_old_monthly() # China house index old version (2008-2010)
+hi_new_monthly = cn.hi_new_monthly("广州","深圳") # China house index new version (newly built commercial housing &  second-hand commercial housing) (monthly)
+ci_eei_monthly = cn.ci_eei_monthly():  # China Macroeconomic Climate Index & Entrepreneur Expectation Index (monthly)
+ig_monthly = cn.ig_monthly():  # China's Industry Growth (monthly)
+cgpi_monthly = cn.cgpi_monthly():  # China Corporate Goods Price Index (monthly)
+cci_csi_cei_monthly = cn.cci_csi_cei_monthly():  # China Consumer Confidence Index & Consumer Satisfaction Index & Consumer Expectation Index (monthly)
+trscg_monthly = cn.trscg_monthly() # China Total Retail Sales of Consumer Goods (monthly)
+ms_monthly = cn. ms_monthly():  # China Monetary Supply (monthly)
+ie_monthly = cn.ie_monthly():  # China Import & Export (monthly)
+stock_monthly = cn.stock_monthly():  # China (SH & SZ) Stock Trading Statistics (monthly)
+fgr_monthly = cn.fgr_monthly():  # China Forex and Gold Reserve (monthly)
+ctsf_monthly = cn.ctsf_monthly():  # China Client Transaction Settlement Funds (monthly)
+sao_monthly = cn.sao_monthly():  # China (SH & SZ) Stock Account Overview (monthly)
+fdi_monthly = cn.fdi_monthly():  # China Foreign Direct Investment (monthly)
+gr_monthly = cn.gr_monthly():  # China Government Revenue (monthly)
+ti_monthly = cn.ti_monthly():  # China Tax Income (monthly)
+nl_monthly = cn.nl_monthly():  # China New Loan (monthly)
+dfclc_monthly = cn.dfclc_monthly():  # China Deposit of Foreign Currency and Local Currency (monthly)
+fl_monthly = cn.fl_monthly():  # China Forex Loan (monthly)
+drr_monthly = cn.drr_monthly():  # China Deposit Reserve Ratio (monthly)
+interest_monthly = cn.interest_monthly():  # China Interest (monthly)
+gdc_daily = cn.gdc_daily():  # China gasoline, Diesel and Crude Oil
+```
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