Segment Information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Information

Schedule of segment information

			For the year ended
	Dec. 31,		Dec. 31,		Dec. 31,		Dec. 31,
	2018		2019		2020		2020
	RMB		RMB		RMB		US$
							(Note 2(e))
Net revenues
One-on-one offerings	1,044,769		1,365,706		1,957,013		299,925
Small class offerings	100,748		112,787		97,082		14,879
Total net revenues	1,145,517		1,478,493		2,054,095		314,804
Cost of revenues
One-on-one offerings	(342,927)		(386,085)		(540,707)		(82,867)
Small class offerings	(67,981)		(53,838)		(39,710)		(6,086)
Total cost of revenues	(410,908)		(439,923)		(580,417)		(88,953)
Gross profit
One-on-one offerings	701,842		979,621		1,416,306		217,058
Small class offerings	32,767		58,949		57,372		8,793
Total gross profit	734,609		1,038,570		1,473,678		225,851
Gross profit margin
One-on-one offerings	67.2	%	71.7	%	72.4	%	72.4	%
Small class offerings	32.5	%	52.3	%	59.1	%	59.1	%
Total gross profit margin	64.1	%	70.2	%	71.7	%	71.7	%
Sales and marketing expenses
One-on-one offerings	(647,314)		(738,010)		(991,479)		(151,951)
Small class offerings	(83,919)		(54,581)		(44,141)		(6,765)
Total sales and marketing expenses	(731,233)		(792,591)		(1,035,620)		(158,716)
Product development expenses
One-on-one offerings	(139,240)		(138,291)		(150,926)		(23,131)
Small class offerings	(45,760)		(19,214)		(11,903)		(1,824)
Total product development expenses	(185,000)		(157,505)		(162,829)		(24,955)
General and administrative expenses
One-on-one offerings	(186,983)		(178,606)		(202,955)		(31,104)
Small class offerings	(36,074)		(17,423)		(11,269)		(1,727)
Total general and administrative expenses	(223,057)		(196,029)		(214,224)		(32,831)
Operating expenses
One-on-one offerings	(973,537)		(1,054,907)		(1,345,360)		(206,186)
Small class offerings	(165,753)		(91,218)		(67,313)		(10,316)
Total operating expenses	(1,139,290)		(1,146,125)		(1,412,673)		(216,502)
Other income
One-on-one offerings	—		—		38,683		5,928
Small class offerings	—		—		4,731		725
Total other income	—		—		43,414		6,653
Income/(loss) from operations
One-on-one offerings	(271,695)		(75,286)		109,629		16,800
Small class offerings	(132,986)		(32,269)		(5,210)		(798)
Total income/(loss) from operations	(404,681)		(107,555)		104,419		16,002

Schedule of property and equipment by geographical location

	Property and equipment
	As of December 31,
	2019	2020
	RMB	RMB
China	16,446	18,284
Philippines	3,890	2,891