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Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net loss | $ (7,050,755) | $ (3,181,596) | $ (2,243,234)
net cash used in operating activities: |  |  |
Depreciation expense | 40,130 | 54,576 | 25,839
Impairment loss on long-term investment | 585,333 |  |
Stock-based compensation | 1,024,361 | 1,005,000 |
Allowance for bad debts | 550,000 |  |
Loss on equity method investment |  | 46,105 | 49,413
Noncash lease expense | 353,419 | 337,221 | 340,132
Gain on lease termination | (4,437) |  |
Gain on extinguishment of debt | (41,548) |  |
Loss on disposal of property and equipment |  |  | 2,721
Foreign currency transaction loss | 38,670 | 35,464 | 216
Other noncash expense | 906 | 722 | 85,086
Changes in operating assets and liabilities: |  |  |
Operating lease liabilities | (393,740) | (266,637) | (231,485)
Accounts receivable | (148,466) | (30,360) | 59,599
Security deposits | 465,843 | 47,042 | (102,967)
Prepaid expenses and other current assets | (54,782) | 206,743 | (82,494)
Deferred revenue | 121,984 | (63,966) | (14,819)
Salary payable | 142,758 | (49,024) | 12,550
Accrued liabilities and other payables | 273,818 | (124,137) | (39,713)
NET CASH USED IN OPERATING ACTIVITIES | (4,096,506) | (1,982,847) | (2,139,156)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |
Cash paid for acquisition of subsidiaries, net of cash acquired |  |  | (109,494)
Purchase of property and equipment | (37,068) | (18,379) | (129,800)
Loan to related party |  |  | (79,510)
Collection of loan to related party | 93,887 | 79,520 |
Loan to employee |  |  | (173,951)
Collection of loan to employee |  | 173,974 |
Cash received from return of investment |  | 306,518 |
Purchase of long-term investment | (350,000) | (873,577) | (232,721)
Loan to third parties | (2,300,000) |  |
NET CASH USED IN BY INVESTING ACTIVITIES | (2,593,181) | (331,944) | (725,476)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |
Proceeds from long-term loan |  | 41,250 |
Payment on finance lease | (163,301) |  |
Advances from related parties |  |  | 14,496
Proceeds from issuance of stocks | 16,637,200 |  | 6,851,401
Repayments to related parties | (2,339) | (4,000) | (427,681)
NET CASH PROVIDED BY FINANCING ACTIVITIES | 16,471,560 | 37,250 | 6,438,216
EFFECT OF EXCHANGE RATE ON CASH AND CASH EQUIVALENTS | (1,579) | 60,946 | (24,688)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 9,780,294 | (2,216,595) | 3,548,896
CASH AND CASH EQUIVALENTS - beginning of year | 1,425,926 | 3,642,521 | 93,625
CASH AND CASH EQUIVALENTS - end of year | 11,206,220 | 1,425,926 | 3,642,521
Cash paid for: |  |  |
Interest |  |  |
Income taxes |  |  |
NON-CASH INVESTING AND FINANCING ACTIVITIES: |  |  |
Cancellation of treasury stock |  | 36,000 |
Proceeds from issuance of stocks deposited in escrow |  |  | 500,000
Expenses paid by related parties on behalf of the Company |  | 4,000 | 179,503
Acquisition consideration given up by a related party |  | 1,000 |
Loan receivable from return of investment | 350,000 | 92,831 |
Remeasurement of the lease liabilities and right-of-use assets due to lease modification |  | 32,227 |
Operating lease right-of-use assets obtained in exchange for operating lease liabilities | $ 170,112 |  |

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